diff --git a/src/environmentSetup/environmentSetup.sh b/src/environmentSetup/environmentSetup.sh
index cfce2e523..851815232 100755
--- a/src/environmentSetup/environmentSetup.sh
+++ b/src/environmentSetup/environmentSetup.sh
@@ -39,59 +39,48 @@ IFS='' read -r -d '' ENVIRONMENT_SETUP_DOC <<"EOF"
 #/ 
 #/ RETURN CODE(S):
 #/	- 0: Returned when:
-#/		- Help message is requested OR
-#/		- Processing is successful.
-#/	- 1: Returned when:
-#/		- Script needs to source file containing shell scripts, but can't find that file.
-#/	- 20: Returned when:
-#/		- Given option is invalid.
-#/	- 21: Returned when:
-#/		- Run from any directory other than the one the script is in.
-#/	- 22: Retruned when:
-#/		- User says they don't want to setup the current user's shell environment.
-#/	- 23: Returned when:
-#/		- User that's running this is one of a list of known system users
-#/			(i.e. not the user's normally account).
-#/	- 24: Returned when:
-#/		- Back up directory already exists. Shouldn't occur unless user runs script,
-#/			quickly stops it, then re-runs it.
-#/	- 25: Returned when:
-#/		- Failed to determine name of shell running in.
-#/	- 26: Returned when:
-#/		- Failed to create directory for backing up user's current shell
-#/			enviroment configuration file(s).
-#/	- 27: Returned when:
-#/		- Failed to configure user's shell environment, but was able to revert it.
-#/	- 28: Returned when:
+#/		- Help message is requested and produced.
+#/		- User's environment is configured.
+#/	- 3: Returned when:
+#/		- Failed to configure user's shell environment, but was able to revert
+#/			to original environment configuration.
+#/		- Failed to create file of flatpak aliases. You'll need to create alias
+#/			of flatpak apps yourself.
+#/	- 4: Returned when:
 #/		- Failed to configure user's shell environment and failed to revert to
-#/			original hidden shell files (*this is bad*).
-#/	- 29: Returned when:
+#/			original hidden shell file(s) (*this is bad*).
 #/		- Failed to configure user's shell environment and failed to revert to
 #/			original shell directory (*this is bad*).
-#/	- 30: Returned when:
-#/		- Failed to configure user's shell environment and failed to remove new
-#/			hidden shell file(s) from user's home directory. User will need to
-#/			manually remove shell files in there home and copy the hidden shell
-#/			file(s) from the back up directory to there home directory.
-#/	- 31: Returned when:
-#/		- Failed to configure user's shell environment and failed to copy
-#/			user's original hidden shell file(s) back to there home directory.
-#/			User will need to manually copy back up directory to there home
-#/			directory.
-#/	- 32: Returned when:
-#/		- Failed to configure user's shell environment and failed to remove new
-#/			shell directory from user's home directory. User will need to
-#/			manually remove shell directory from there home and copy all
-#/			file(s) and directory(ies) from the back up directory to there
-#/			home directory.
-#/	- 33: Returned when:
-#/		- Failed to configure user's shell environment and fialed to copy
-#/			user's original shell directory back to there home directory. User
-#/			will need to manually remove hidden shell file(s) from there home
-#/			and copy all file(s) and directory(ies) from the back up directory
-#/			to there home directory.
-#/	- 34: Returned when:
-#/		- Failed to create file of flatpak app aliases.
+#/	- 131: Returned when user provides a response that should lead to program exit.
+#/	- 140: Returned when given option name is invalid.
+#/	- 162: Returned when failed to configure user's shell environment and
+#/			failed to remove new hidden shell file(s) from user's home
+#/			directory. User will need to manually remove shell file(s) in
+#/			their home and copy the hidden shell file(s) from the back up
+#/			directory to there home directory.
+#/	- 166: Returned when failed to configure user's shell environment and
+#/			failed to copyuser's original hidden shell file(s) back to user's
+#/			home directory. User will need to manually copy file(s) from back
+#/			up directory to there home directory.
+#/	- 171: Returned when failed to create directory for backing up user's
+#/			current shell environment configuration file(s).
+#/	- 172: Returned when failed to configure user's shell environment and
+#/			failed to remove new shell directory from user's home directory.
+#/			User will need to manually remove shell directory from their home
+#/			directory and copy all file(s) and directory(ies) from the back up
+#/			directory to their home directory.
+#/	- 173: Returned when back up directory already exists.
+#/	- 175: Returned when failed to configure user's shell environment and
+#/			failed to copy user's original shell directory back to their home
+#/			directory. User will need to manually remove hidden shell file(s)
+#/			from their home and copy all file(s) and directory(ies) from the
+#/			back up directory to their home directory.
+#/	- 180: Returned when:
+#/		- Run from any directory other than the one this script is located in.
+#/	- 194: Returned when user that's running this is one of a list of known
+#/			system users (i.e. not the user's normal account).
+#/	- 202: Returned when can't find file that's sourced to ensure access to other shell script(s).
+#/	- 209: Returned when failed to determine name of shell running in.
 #/
 #/ EXAMPLE(S):
 #/	./environmentSetup.sh
@@ -101,6 +90,7 @@ IFS='' read -r -d '' ENVIRONMENT_SETUP_DOC <<"EOF"
 #/ TODO(S):
 #/	- Rather than moving user's original files to the back up directory, copy them then remove them.
 #/	- Set a default answer and make user input checking more robust.
+#/	- Return 193 when calling user is root, 194 otherwise.
 EOF
 # Ensure script is being run from the same location as it's located.
 if [[ "./$(basename $0)" == $0 ]]; then
@@ -111,7 +101,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 			. $shellRoot
 		else
 			echo "Failed to find file used to locate (source) shell scripts ($shellRoot)."
-			exit 1
+			exit 202
 		fi
 	fi
 
@@ -158,7 +148,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 			*)
 				log $errorLvl --full-title -m="Invalid given argument: '$fullArg', see doc:"
 				echo "$ENVIRONMENT_SETUP_DOC"
-				return 20  ;;
+				exit 140  ;;
 		esac
 	done
 
@@ -253,7 +243,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 											exit 0
 										else
 											log $errorLvl -m="Failed to create file of flatpak app aliases. flatpakAliasCreaator() error output:" -m="$errOut"
-											exit 34
+											exit 3
 										fi
 									else
 										log $errorLvl -m="Failed to copy directory with shell scripts to $USER's home."
@@ -270,7 +260,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 										# Check if deletion worked.
 										if [[ $rtOut -ne 0 ]]; then
 											log $errorLvl -m="Failed to revert environment, you'll need to manually copy contents of '$BACK_UP_DIR' back to '$userHome'."
-											exit 32
+											exit 172
 										fi
 									else
 										log $infoLvl -m="Skipping removal of 'shell' directory from $USER's home because it doesn't exist."
@@ -288,7 +278,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 										# Check if deletion worked.
 										if [[ $rtOut -ne 0 ]]; then
 											log $errorLvl -m="Failed to revert environment, you'll need to manually copy contents of '$BACK_UP_DIR' back to '$userHome'."
-											exit 33
+											exit 175
 										fi
 									else
 										log $infoLvl -m="Skipping copying 'shell' directory from back up because the back up doesn't contain it."
@@ -306,7 +296,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 								# Stop copying files if a copy fails.
 								if [[ $rtOut -ne 0 ]]; then
 									log $errorLvl -m="Failed to move '$shellFilePath' to '$newShellFilePath'."
-									exit 30
+									exit 162
 								fi
 								
 								# Revert to original hidden shell file(s).
@@ -321,7 +311,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 									# Stop copying files if a copy fails.
 									if [[ $rtOut -ne 0 ]]; then
 										log $errorLvl -m="Failed to move hidden files from '$BACK_UP_DIR' back to $USER's home, you'll need to manually copy contents."
-										exit 31
+										exit 166
 									fi
 								else
 									log $warnLvl -m="Skipping copying of hidden shell file(s) because the back up doesn't contain any."
@@ -340,7 +330,7 @@ if [[ "./$(basename $0)" == $0 ]]; then
 								# Check if deletion worked.
 								if [[ $rtOut -ne 0 ]]; then
 									log $errorLvl -m="Failed to revert to original shell directory, you'll need to manually copy contents of '$BACK_UP_DIR' back to '$userHome'."
-									exit 29
+									exit 4
 								fi
 							fi
 						else
@@ -357,34 +347,35 @@ if [[ "./$(basename $0)" == $0 ]]; then
 							# Check if deletion worked.
 							if [[ $rtOut -ne 0 ]]; then
 								log $errorLvl -m="Failed to revert to original hidden shell file(s), you'll need to manually copy contents of '$BACK_UP_DIR/' back to '$userHome/'."
-								exit 28
+								exit 4
 							fi
 						fi
 						
 						log $infoLvl -m="Shell environment configuration reverted."
-						exit 27
+						exit 3
 					else
 						log $errorLvl -m="Failed to create directory for backing up $USER's data."
-						exit 26
+						exit 171
 					fi
 				else
 					log $errorLvl -m="Failed, couldn't determine shell name."
-					exit 25
+					exit 209
 				fi
 			else
 				log $errorLvl -m="Failed because back up directory '$BACK_UP_DIR' already exists."
-				exit 24
+				exit 173
 			fi
 		else
 			log $errorLvl -m="Failed, script must be run using your user, not '$USER'."
-			exit 23
+			# TODO: Return 193 when calling user is root, 194 otherwise.
+			exit 194
 		fi
 	else
 		log $errorLvl --line-title -m="Re-launch this as the user you'd like to configure the environment of."
-		exit 22
+		exit 131
 	fi
 else
 	log $errorLvl -m="Failed, script must be run from the same directory it's located in."
-	exit 21
+	exit 180
 fi
 
diff --git a/src/environmentSetup/util/flatpakAliasCreator.sh b/src/environmentSetup/util/flatpakAliasCreator.sh
index 89797bb3e..7bb1e7651 100755
--- a/src/environmentSetup/util/flatpakAliasCreator.sh
+++ b/src/environmentSetup/util/flatpakAliasCreator.sh
@@ -33,20 +33,15 @@ IFS='' read -r -d '' FLATPAK_ALIAS_CREATOR_DOC <<"EOF"
 #/ 
 #/ RETURN CODE(S):
 #/	- 0: Returned when:
-#/		- Help message is requested OR
+#/		- Help message is requested and produced.
 #/		- Aliases are created and written to file.
-#/	- 20: Returned when:
-#/		- Given option is invalid.
-#/	- 21: Returned when:
-#/		- Failed to create file for flatpak aliases.
-#/	- 22: Returned when:
-#/		- Failed to write to flatpak aliases file. File removed.
-#/	- 23: Returned when:
-#/		- Failed to write to flatpak aliases file. File not removed because it
-#/			couldn't be accessed.
-#/	- 24: Returned when:
-#/		- Failed to write to flatpak aliases file and failed to remove file.
-#/			User must remove it manually.
+#/	- 140: Returned when given option name is invalid.
+#/	- 161: Returned when failed to create file for flatpak aliases.
+#/	- 161: Returned when failed to write to flatpak aliases file and file is then removed.
+#/	- 162: Returned when failed to write to flatpak aliases file and failed to
+#/			remove file. User must remove it manually.
+#/	- 164: Returned when failed to write to flatpak aliases file and failed to
+#/			remove it because it couldn't be accessed.
 #/
 #/ EXAMPLE(S):
 #/	flatpakAliasCreator
@@ -54,7 +49,7 @@ IFS='' read -r -d '' FLATPAK_ALIAS_CREATOR_DOC <<"EOF"
 #/	flatpakAliasCreator --help
 #/
 #/ TODO(S):
-#/	- NoOp
+#/	- None
 EOF
 funcName=flatpakAliasCreator
 
@@ -99,7 +94,7 @@ for fullArg in "${@}"; do
 		*)
 			log $errorLvl --full-title -m="Invalid given argument: '$fullArg', see doc:"
 			echo "$FLATPAK_ALIAS_CREATOR_DOC"
-			return 20  ;;
+			exit 140  ;;
 	esac
 done
 
@@ -163,17 +158,17 @@ if [[ $rtOut -eq 0 ]]; then
 				 > >(stdOut=$(cat); typeset -p stdOut); rtOut=$?; typeset -p rtOut )"
 			if [[ $rtVal -ne 0 ]]; then
 				log $errorLvl -m="Failed to remove flatpak aliases file '$flatpakAliasFilePath'."
-				exit 24
+				exit 162
 			fi
 		else
 			log $warnLvl -m="Flatpak aliases file doesn't exist or can't be accessed, removal skipped."
-			exit 23
+			exit 164
 		fi
 		log $infoLvl -m="Removed flatpak aliases file."
-		exit 22		
+		exit 161
 	fi
 else
 	log $errorLvl -m="Failed to create file for flatpak aliases ($flatpakAliasFilePath)."
-	exit 21
+	exit 161
 fi
 
diff --git a/src/shell/functions/README.md b/src/shell/functions/README.md
index 800ef009e..c8ab2bd57 100644
--- a/src/shell/functions/README.md
+++ b/src/shell/functions/README.md
@@ -1,3 +1,58 @@
+# Return Codes
+
+Meaning of each return code:
+
+| Code    | Returned When                                                                                 | Example                                 | Note(s)                                                    |
+| -------:|:--------------------------------------------------------------------------------------------- |:--------------------------------------- |:---------------------------------------------------------- |
+| `0`     | <ul><li>Help message is requested and produced.</li><li>Processing is successfull.</li></ul>  |                                         |                                                            |
+| `1`     | POSIX Standard: `Catchall for general errors`                                                 | `let "var1 = 1/0"`                      | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `2`     | POSIX Standard: `Misuse of shell builtins (according to Bash documentation)`                  | `empty_function() {}`                   | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `3`     | Failed to execute, but it's not that bad.                                                     | Failed to change file, but reverted it. |                                                            |
+| `4`     | Failed to execute, and it is that bad.                                                        | Failed to change file & to revert it.   |                                                            |
+| `126`   | POSIX Standard: `Command invoked cannot execute`                                              | `/dev/null`                             | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `127`   | POSIX Standard: `command not found`                                                           | `illegal_command`                       | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `128`   | POSIX Standard: `Invalid argument to exit`                                                    | `exit 3.14159`                          | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `128+n` | POSIX Standard: `Fatal error signal "n"`                                                      | `kill -9 $PPID of script`               | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `130`   | POSIX Standard: `Script terminated by Control-C`                                              | `Ctl-C`                                 | https://tldp.org/LDP/abs/html/exitcodes.html               |
+| `131`   | Control-C is handled prior to exiting or user chooses to exit through the UI.                 |                                         |                                                            |
+| `140`   | A provided option name is invalid.                                                            |                                         | Codes in the 14Xs relate to options.                       |
+| `141`   | A provided option value is invalid.                                                           |                                         |                                                            |
+| `142`   | A required option is not provided.                                                            |                                         |                                                            |
+| `151`   | A provided argument value is invalid.                                                         |                                         | Codes in the 15Xs relate to arguments.                     |
+| `152`   | A required argument is not provided.                                                          |                                         |                                                            |
+| `160`   | Required file doesn't exist.                                                                  |                                         | Codes in the 16Xs relate to file access.                   |
+| `161`   | Failed to create a file.                                                                      |                                         |                                                            |
+| `162`   | Failed to remove file.                                                                        |                                         |                                                            |
+| `163`   | File already exists.                                                                          |                                         |                                                            |
+| `164`   | File doesn't already exist or can't be found/accessed.                                        |                                         |                                                            |
+| `165`   | Failed to move/rename file.                                                                   |                                         |                                                            |
+| `166`   | Failed to copy file.                                                                          |                                         |                                                            |
+| `167`   | Failed to open file.                                                                          |                                         |                                                            |
+| `168`   | Failed read from file.                                                                        |                                         |                                                            |
+| `169`   | Failed to write to file.                                                                      |                                         |                                                            |
+| `170`   | Required directory doesn't exist.                                                             |                                         | Codes in the 17Xs relate to directory access.              |
+| `171`   | Failed to create a directory.                                                                 |                                         |                                                            |
+| `172`   | Failed to remove directory.                                                                   |                                         |                                                            |
+| `173`   | Directory already exists.                                                                     |                                         |                                                            |
+| `174`   | Directory doesn't already exist or can't be found/accessed.                                   |                                         |                                                            |
+| `175`   | Failed to move/rename directory.                                                              |                                         |                                                            |
+| `176`   | Failed to copy directory.                                                                     |                                         |                                                            |
+| `177`   | Failed to enter directory.                                                                    |                                         |                                                            |
+| `180`   | Code not run from same directory it's located in.                                             |                                         | Codes in the 18Xs relate to the location code is run from. |
+| `181`   | Code not run from user's home directory.                                                      |                                         |                                                            |
+| `182`   | Code not run from the correct directory (generic version of other codes).                     |                                         |                                                            |
+| `190`   | Code sourced when it shouldn't be.                                                            |                                         | Codes in the 19Xs relate to how the code is envoked.       |
+| `191`   | Code isn't sourced when it should be.                                                         |                                         |                                                            |
+| `192`   | Code not run by/as root when it should be.                                                    |                                         |                                                            |
+| `193`   | Code run as/by root when it shouldn't be.                                                     |                                         |                                                            |
+| `194`   | Code run by incorrect user.                                                                   |                                         |                                                            |
+| `200`   | Environment variable(s) set to unsupported value.                                             |                                         | Codes in the 20Xs relate to environment setup.             |
+| `201`   | Environment variable(s) not set.                                                              |                                         |                                                            |
+| `202`   | Requried script/function not accessible (doesn't exist at expected path, isn't sourced, etc). |                                         |                                                            |
+| `203`   | Required system commands not accessible.                                                      |                                         |                                                            |
+| `209`   | Any other environment issue.                                                                  |                                         |                                                            |
+| `255`   | POSIX Standard: `Exit status out of range`                                                    | `exit -1`                               | https://tldp.org/LDP/abs/html/exitcodes.html               |
+
 # POSIX Functions, Globals, and Constants
 
 TODO
diff --git a/src/shell/functions/backUp.sh b/src/shell/functions/backUp.sh
index 6554b7e88..ce6b7452f 100755
--- a/src/shell/functions/backUp.sh
+++ b/src/shell/functions/backUp.sh
@@ -3,6 +3,8 @@
  #########################
 ## Global(s)/Constant(s) ##
  #########################
+## Global(s) ##
+# NoOp
 ## Constant(s) ##
 . $SHELL_FUNCTIONS_CONSTANTS/backUp.sh
 
@@ -31,8 +33,7 @@ IFS='' read -r -d '' BACKUP_DOC <<"EOF"
 #/  
 #/ OPTION(S):
 #/	-h, --help
-#/		Print this help message. Function will return code of '0'. No processing will be
-#/		done.
+#/		Print this help message. Function will return code of '0'. No processing will be done.
 #/		(OPTIONAL)
 #/	-q, --quiet
 #/		Produces no output other than error level.
@@ -41,13 +42,11 @@ IFS='' read -r -d '' BACKUP_DOC <<"EOF"
 #/		(OPTIONAL)
 #/ 
 #/ RETURN CODE(S):
-#/	- 0:
-#/		Returned when:
-#/			- Help message is requested OR
-#/			- Back up is successful.
-#/	- 20:
-#/		Returned when:
-#/			- Given option is invalid.
+#/	- 0: Returned when:
+#/		- Help message is requested and produced.
+#/		- Back up is successful.
+#/	- 140: Returned when given option is invalid.
+#/	- 203: Returned when rsync isn't installed/accessible.
 #/ 
 #/ EXAMPLE(S):
 #/	backUp
@@ -62,6 +61,7 @@ IFS='' read -r -d '' BACKUP_DOC <<"EOF"
 #/	- Missing back up location should be handled.
 EOF
 log -c="backUp" -m="Resetting local variable(s)..."
+
  ###############################
 ## Reset/Set Local Variable(s) ##
  ###############################
@@ -104,7 +104,7 @@ for fullArg in "${@}"; do
 		*)
 			log $errLvl --full-title -m="Invalid given argument: '$fullArg', see doc:"
 			echo "$BACKUP_DOC"
-			exit 20  ;;
+			exit 140  ;;
 	esac
 done
 	
@@ -116,7 +116,7 @@ if [[ "$(command -v rsync)" != "" ]]; then
 	log $traceLvl -m="rsync is installed."
 else
 	log $errLvl -m="rsync isn't installed."
-	exit 21
+	exit 203
 fi
 
  ###############
diff --git a/src/shell/functions/checkRequiredOpts.sh b/src/shell/functions/checkRequiredOpts.sh
index 63a5f911a..8d31220a7 100755
--- a/src/shell/functions/checkRequiredOpts.sh
+++ b/src/shell/functions/checkRequiredOpts.sh
@@ -1,14 +1,27 @@
 #!/usr/bin/env sh
 
+ #########################
+## Global(s)/Constant(s) ##
+ #########################
+## Global(s) ##
+# NoOp
+## Constant(s) ##
+# NoOp
+
+ #####################
+## Local Variable(s) ##
+ #####################
+# NoOp
+
  ###############
 ## Function(s) ##
  ###############
 IFS='' read -r -d '' CHECK_REQUIRED_OPTS_DOC <<"EOF"
 #/ DESCRIPTION:
-#/	When given a message and any number of variable(s) (see '-a'), each variables will
-#/	be checked to ensure it has been set to something, If it has not been, a code of
-#/	'1' will be returned. If all given value(s) were set, a code of '0' will be
-#/	returned.
+#/	When given a message and any number of variable(s) (see '-a'), each
+#/	variables will be checked to ensure it has been set to something, If it has
+#/	not been, a code of '1' will be returned. If all given value(s) were set,
+#/	a code of '0' will be returned.
 #/
 #/ USAGE: checkRequiredOpts "<callingFunctionDoc>" [OPTIONS]...
 #/
@@ -39,19 +52,17 @@ IFS='' read -r -d '' CHECK_REQUIRED_OPTS_DOC <<"EOF"
 #/				offending value be surrounded with excapted '" before and after
 #/				the value (i.e. "-a=\"<specialCaseVal>\"').
 #/		(REQUIRED)
+#/	-h, --help
+#/		Print this help message. Function will return code of '0'. No processing will be done.
+#/		(OPTIONAL)
 #/
 #/ RETURN CODE(S):
-#/	- 0:
-#/		Returned when:
-#/			- Help message is requested OR
-#/			- Processing is successful.
-#/	- 1:
-#/		Returned when:
-#/			- Required argument(s) haven't been set.
-#/	- 20:
-#/		Returned when:
-#/			- Provided option is invalid OR
-#/			- No option is provided.
+#/	- 0: Returned when:
+#/		- Help message is requested and produced.
+#/		- Processing is successful.
+#/	- 3: Returned when one or more of the options provided for error checking are invalid.
+#/	- 140: Returned when given option name is invalid.
+#/	- 152: Returned when required argument (doc) isn't provided.
 #/
 #/ EXAMPLE(S):
 #/	checkRequiredOpts --help
@@ -82,7 +93,7 @@ done
 if [[ -z $1 ]]; then
 	printf "# No option was provided, nothing to do, see doc bellow for usage... #\n"
 	echo "$CHECK_REQUIRED_OPTS_DOC"
-	exit 20
+	exit 152
 else
 	docString="$1"
 	set -- "${@:2}"
@@ -102,7 +113,7 @@ for fullArg in "${@}"; do
 			if [[ -z $arg ]]; then
 				printf "# Missing required argument(s), see doc bellow... #\n"
 				echo "$docString"
-				exit 1
+				exit 3
 			fi  ;;
 		-h|--help)
 			echo "$CHECK_REQUIRED_OPTS_DOC"
@@ -110,7 +121,9 @@ for fullArg in "${@}"; do
 		*)
 			printf "## Invalid given argument: '$fullArg', see doc: ##\n"
 			echo "$CHECK_REQUIRED_OPTS_DOC"
-			exit 20  ;;
+			exit 140  ;;
 	esac
 done
 
+exit 0
+
diff --git a/src/shell/functions/example_function.sh b/src/shell/functions/example_function.sh
index 5afd49ebc..5806e3396 100755
--- a/src/shell/functions/example_function.sh
+++ b/src/shell/functions/example_function.sh
@@ -27,16 +27,14 @@ IFS='' read -r -d '' FUNCTION_NAME_DOC <<"EOF"
 #/
 #/ OPTION(S):
 #/	-h, --help
-#/		Print this help message. Function will return code of '0'. No processing will be
-#/		done.
+#/		Print this help message. Function will return code of '0'. No processing will be done.
 #/		(OPTIONAL)
 #/ 
 #/ RETURN CODE(S):
 #/	- 0: Returned when:
-#/		- Help message is requested OR
+#/		- Help message is requested and produced.
 #/		- Processing is successful.
-#/	- 20: Returned when:
-#/		- Given option is invalid.
+#/	- 140: Returned when given option is invalid.
 #/
 #/ EXAMPLE(S):
 #/	functionName --help
@@ -85,7 +83,7 @@ function functionName {
 			*)
 				log $errorLvl --full-title -m="Invalid given argument: '$fullArg', see doc:"
 				echo "$FUNCTION_NAME_DOC"
-				return 20  ;;
+				exit 140  ;;
 		esac
 	done
 
diff --git a/src/shell/functions/log.sh b/src/shell/functions/log.sh
index 669211c37..1f86add83 100755
--- a/src/shell/functions/log.sh
+++ b/src/shell/functions/log.sh
@@ -1,19 +1,26 @@
 #!/usr/bin/env sh
 
- ###########################################
-## Global(s)/Constant(s)/Local Variable(s) ##
- ###########################################
+ #########################
+## Global(s)/Constant(s) ##
+ #########################
+## Global(s) ##
+# NoOp
 ## Constant(s) ##
 # Includes constant(s) relevant to logger method.
 . $SHELL_FUNCTIONS_CONSTANTS/log.sh
 
+ #####################
+## Local Variable(s) ##
+ #####################
+# NoOp
+
  ###############
 ## Function(s) ##
  ###############
 IFS='' read -r -d '' LOG_DOC <<"EOF"
 #/ DESCRIPTION:
-#/	Used to produce log messages. Current global log level, tracked by 'SHELL_LOG_LEVEL',
-#/	is used to determine if given message should be printed.
+#/	Used to produce log messages. Current global log level, tracked by
+#/	'SHELL_LOG_LEVEL', is used to determine if given message should be printed.
 #/
 #/ USAGE: log [OPTIONS]... -m="message text"...
 #/
@@ -22,8 +29,7 @@ IFS='' read -r -d '' LOG_DOC <<"EOF"
 #/
 #/ OPTION(S):
 #/	-h, --help
-#/		Print this help message. Function will return code of '0'. No processing will be
-#/		done.
+#/		Print this help message. Function will return code of '0'. No processing will be done.
 #/		(OPTIONAL)
 #/	-c=<functionName>
 #/		Name of calling code (function).
@@ -31,89 +37,84 @@ IFS='' read -r -d '' LOG_DOC <<"EOF"
 #/		(OPTIONAL)
 #/	-m=<logMsg>, --msg=<logMsg>
 #/		Message user would like log produced of.
-#/			- Note: At least one of these is required. If multiple are given, each
-#/				will show up on a new line.
+#/			- Note: At least one of these is required. If multiple are given,
+#/				each will show up on a new line.
 #/		(REQUIRED)
 #/	--line-title
 #/		When given, resulting log text will include a prefix and postfix.
 #/			- Note: Shouldn't be combined with any other title option.
-#/			- Note: If no title option is given, then no prefix, postfis, header, or
-#/				footer will be included in the resulting log text.
+#/			- Note: If no title option is given, then no prefix, postfis,
+#/				header, or footer will be included in the resulting log text.
 #/		(OPTIONAL)
 #/	--full-title
-#/		When given, resulting log text will include a prefix, postfix, header, and
-#/		footer.
+#/		When given, resulting log text will include a prefix, postfix, header, and footer.
 #/			- Note: Shouldn't be combined with any other title option.
-#/			- Note: If no title option is given, then no prefix, postfis, header, or
-#/				footer will be included in the resulting log text.
+#/			- Note: If no title option is given, then no prefix, postfis,
+#/				header, or footer will be included in the resulting log text.
 #/		(OPTIONAL)
 #/	-t, --trace
-#/		When given, the default *trace* formatting character will be used by prefix,
-#/		postfix, header, and footer (if used). Providing this option will also cause a
-#/		log message with the given text to be printed to stdout *if* the shell log level
-#/		($SHELL_LOG_LEVEL) is equal to, or higher than, *trace*. This includes: trace,
-#/		debug, info, warn, and error.
+#/		When given, the default *trace* formatting character will be used by
+#/		prefix, postfix, header, and footer (if used). Providing this option
+#/		will also cause a log message with the given text to be printed to
+#/		stdout *if* the shell log level ($SHELL_LOG_LEVEL) is equal to, or
+#/		higher than, *trace*. This includes: trace,debug, info, warn, and error.
 #/			- Note: Shouldn't be combined with any other log level option.
-#/			- Note: If multiple loge level options are given in a single call, the
-#/				last one given will be used.
+#/			- Note: If multiple loge level options are given in a single call,
+#/				the last one given will be used.
 #/			- Note: When no log level option is provided, *trace* level is used.
 #/		(DEFAULT)
 #/	-d, --debug
-#/		When given, the default *debug* formatting character will be used by prefix,
-#/		postfix, header, and footer (if used). Providing this option will also cause a
-#/		log message with the given text to be printed to stdout *if* the shell log level
-#/		($SHELL_LOG_LEVEL) is equal to, or higher than, *debug*. This includes: debug,
-#/		info, warn, and error.
+#/		When given, the default *debug* formatting character will be used by
+#/		prefix, postfix, header, and footer (if used). Providing this option
+#/		will also cause a log message with the given text to be printed to
+#/		stdout *if* the shell log level ($SHELL_LOG_LEVEL) is equal to, or
+#/		higher than, *debug*. This includes: debug, info, warn, and error.
 #/			- Note: Shouldn't be combined with any other log level option.
-#/			- Note: If multiple loge level options are given in a single call, the
-#/				last one given will be used.
+#/			- Note: If multiple loge level options are given in a single call,
+#/				the last one given will be used.
 #/			- Note: When no log level option is provided, *trace* level is used.
 #/		(OPTIONAL)
 #/	-i, --info
-#/		When given, the default *info* formatting character will be used by prefix,
-#/		postfix, header, and footer (if used). Providing this option will also cause a
-#/		log message with the given text to be printed to stdout *if* the shell log level
-#/		($SHELL_LOG_LEVEL) is equal to, or higher than, *info*. This includes: info, warn,
-#/		and error.
+#/		When given, the default *info* formatting character will be used by
+#/		prefix, postfix, header, and footer (if used). Providing this option
+#/		will also cause a log message with the given text to be printed to
+#/		stdout *if* the shell log level ($SHELL_LOG_LEVEL) is equal to, or
+#/		higher than, *info*. This includes: info, warn, and error.
 #/			- Note: Shouldn't be combined with any other log level option.
-#/			- Note: If multiple loge level options are given in a single call, the
-#/				last one given will be used.
+#/			- Note: If multiple loge level options are given in a single call,
+#/				the last one given will be used.
 #/			- Note: When no log level option is provided, *trace* level is used.
 #/		(OPTIONAL)
 #/	-w, --warn
-#/		When given, the default *warn* formatting character will be used by prefix,
-#/		postfix, header, and footer (if used). Providing this option will also cause a
-#/		log message with the given text to be printed to stdout *if* the shell log level
-#/		($SHELL_LOG_LEVEL) is equal to, or higher than, *debug*. This includes: warn
-#/		and error.
+#/		When given, the default *warn* formatting character will be used by
+#/		prefix, postfix, header, and footer (if used). Providing this option
+#/		will also cause a log message with the given text to be printed to
+#/		stdout *if* the shell log level ($SHELL_LOG_LEVEL) is equal to, or
+#/		higher than, *debug*. This includes: warn and error.
 #/			- Note: Shouldn't be combined with any other log level option.
-#/			- Note: If multiple loge level options are given in a single call, the
-#/				last one given will be used.
+#/			- Note: If multiple loge level options are given in a single call,
+#/				the last one given will be used.
 #/			- Note: When no log level option is provided, *trace* level is used.
 #/		(OPTIONAL)
 #/	-e, --error
-#/		When given, the default *error* formatting character will be used by prefix,
-#/		postfix, header, and footer (if used). Providing this option will also cause a
-#/		log message with the given text to be printed to stdout *if* the shell log level
-#/		($SHELL_LOG_LEVEL) is equal to, or higher than, *error*. This includes: error.
+#/		When given, the default *error* formatting character will be used by
+#/		prefix, postfix, header, and footer (if used). Providing this option
+#/		will also cause a log message with the given text to be printed to
+#/		stdout *if* the shell log level($SHELL_LOG_LEVEL) is equal to, or
+#/		higher than, *error*. This includes: error.
 #/			- Note: Shouldn't be combined with any other log level option.
-#/			- Note: If multiple loge level options are given in a single call, the
-#/				last one given will be used.
+#/			- Note: If multiple loge level options are given in a single call,
+#/				the last one given will be used.
 #/			- Note: When no log level option is provided, *trace* level is used.
 #/		(OPTIONAL)
 #/
 #/ RETURN CODE(S):
-#/	- 0:
-#/		Returned when:
-#/			- Help message is requested OR
-#/			- Processing is successfull OR
+#/	- 0: Returned when:
+#/		- Help message is requested and produced.
+#/		- Processing is successful
 #/			- No arguments are provided.
-#/	- 1:
-#/		Returned when:
-#/			- Required argument(s) haven't been provided.
-#/	- 20:
-#/		Returned when:
-#/			- Provided option is invalid.
+#/	- 140: Returned when given option name is invalid.
+#/	- 142: Returned when a required option is not provided.
 #/
 #/ EXAMPLE(S):
 #/	log --help
@@ -182,7 +183,7 @@ for fullArg in "${@}"; do
 			printf "$pfix ERROR log:\t"
 			$SHELL_FUNCTIONS/output/output.sh --pp -m="Calling function provided invalid option: '$fullArg', see doc:"
 			echo "$LOG_DOC"
-			exit 20  ;;
+			exit 140  ;;
 	esac
 done
 
@@ -192,7 +193,7 @@ done
 $SHELL_FUNCTIONS/checkRequiredOpts.sh "$LOG_DOC" -a="${msg[@]}"
 rtVal=$?
 if [[ $rtVal -ne 0 ]]; then
-	exit $rtVal
+	exit 142
 fi
 
 # Determine if log message should be output.
@@ -234,3 +235,5 @@ if [[ $SHELL_LOG_LEVEL -ge $lvl ]]; then
 	printf "$msg"
 fi
 
+exit 0
+
diff --git a/src/shell/functions/output/output.sh b/src/shell/functions/output/output.sh
index ea11d6653..98f62d372 100755
--- a/src/shell/functions/output/output.sh
+++ b/src/shell/functions/output/output.sh
@@ -35,14 +35,14 @@ IFS='' read -r -d '' OUTPUT_DOC <<"EOF"
 #/
 #/ OPTION(S):
 #/	-h, --help
-#/		Print this help message. Function will return code of '0'. No processing will be
-#/		done.
+#/		Print this help message. Function will return code of '0'. No processing will be done.
 #/		(OPTIONAL)
 #/	-m=<msg>, --msg=<msg>
 #/		Message user would like formatted output produced of.
 #/			- Note: If multiple are given, each will show up on a new line.
-#/			- Note: If one line exceeds the set max line length, it will be broken up.
-#/				The est of the line will start with the same inditation.
+#/			- Note: If one line exceeds the set max line length, it will be
+#/				broken up. The est of the line will start with the same
+#/				inditation.
 #/			- Note: '\t' and '\n\ will be handled as the 'printf' function would.
 #/			- Note: At least one instance of this option must be provided.
 #/		(REQUIRED)
@@ -57,7 +57,7 @@ IFS='' read -r -d '' OUTPUT_DOC <<"EOF"
 #/			- Note: Redundant if -p.
 #/		(OPTIONAL)
 #/	-l=<maxLineLength>, --lineLength=<maxLineLength>
-#/		Sets max number of characters that may be included on a sinlge line.
+#/		Sets max number of characters that may be included on a single line.
 #/			- Note: Line length includes prefix and postfix if included.
 #/			- Note: Default value: 100.
 #/		(OPTIONAL)
@@ -69,68 +69,59 @@ IFS='' read -r -d '' OUTPUT_DOC <<"EOF"
 #/		Sets character used by header, footer, prefix, and postfix.
 #/			- Note: Default value: $DEFAULT_CHAR.
 #/			- Note: Some special characters may require two to be given (ex. -c="%%").
-#/			- Note: Some *other* special characters may not work at all (ex. back
-#/				slash).
+#/			- Note: Some *other* special characters may not work at all (ex. back slash).
 #/		(OPTIONAL)
 #/	--indent=<numSpacesToIndent>
-#/		Sets number of spaces formatted message, including prefix/postfix/header/footer
-#/		if used, should be indented.
+#/		Sets number of spaces formatted message, including
+#/		prefix/postfix/header/footer if used, should be indented.
 #/			- Note: Default value: $DEFAULT_INDENT.
 #/		(OPTIONAL)
 #/	-t, --trace
-#/		When given, *trace* formatting character ($TRACE_CHAR) is used as formatting
-#/		character.
-#/			- Note: If the formatting character isn't set, and no level is provided
-#/				(ex. debug, error), then the default formatting character
-#/				($DEFAULT_CHAR) is used.
+#/		When given, *trace* formatting character ($TRACE_CHAR) is used as formatting character.
+#/			- Note: If the formatting character isn't set, and no level is
+#/				provided (ex. debug, error), then the default formatting
+#/				character ($DEFAULT_CHAR) is used.
 #/		(OPTIONAL)
 #/	-d, --debug
-#/		When given, *debug* formatting character ($DEBUG_CHAR) is used as formatting
-#/		character.
-#/			- Note: If the formatting character isn't set, and no level is provided
-#/				(ex. debug, error), then the default formatting character
-#/				($DEFAULT_CHAR) is used.
+#/		When given, *debug* formatting character ($DEBUG_CHAR) is used as
+#/		formatting character.
+#/			- Note: If the formatting character isn't set, and no level is
+#/				provided (ex. debug, error), then the default formatting
+#/				character ($DEFAULT_CHAR) is used.
 #/		(OPTIONAL)
 #/	-i, --info
-#/		When given, *info* formatting character ($INFO_CHAR) is used as formatting
-#/		character.
-#/			- Note: If the formatting character isn't set, and no level is provided
-#/				(ex. debug, error), then the default formatting character
-#/				($DEFAULT_CHAR) is used.
+#/		When given, *info* formatting character ($INFO_CHAR) is used as
+#/		formatting character.
+#/			- Note: If the formatting character isn't set, and no level is
+#/				provided (ex. debug, error), then the default formatting
+#/				character ($DEFAULT_CHAR) is used.
 #/		(OPTIONAL)
 #/	-w, --warn
-#/		When given, *warn* formatting character ($WARN_CHAR) is used as formatting
-#/		character.
-#/			- Note: If the formatting character isn't set, and no level is provided
-#/				(ex. debug, error), then the default formatting character
-#/				($DEFAULT_CHAR) is used.
+#/		When given, *warn* formatting character ($WARN_CHAR) is used as
+#/		formatting character.
+#/			- Note: If the formatting character isn't set, and no level is
+#/				provided (ex. debug, error), then the default formatting
+#/				character ($DEFAULT_CHAR) is used.
 #/		(OPTIONAL)
 #/	-e, --error
-#/		When given, *error* formatting character ($ERROR_CHAR) is used as formatting
-#/		character.
-#/			- Note: If the formatting character isn't set, and no level is provided
-#/				(ex. debug, error), then the default formatting character
-#/				($DEFAULT_CHAR) is used.
+#/		When given, *error* formatting character ($ERROR_CHAR) is used as
+#/		formatting character.
+#/			- Note: If the formatting character isn't set, and no level is
+#/				provided (ex. debug, error), then the default formatting
+#/				character ($DEFAULT_CHAR) is used.
 #/		(OPTIONAL)
 #/
 #/ RETURN CODE(S):
-#/	- 0:
-#/		Returned when:
-#/			- Help message is requested OR
-#/			- Processing is successfull.
-#/	- 2:
-#/		Returned when:
-#/			- No message text is given.
-#/	- 3:
-#/		Returned when:
-#/			- Provided indent value is negative.
-#/	- 4:
-#/		Returned when:
-#/			- Provided max line length value is too small:
-#/				- Line length - prefix - postfix > 0.
-#/	- 20:
-#/		Returned when:
-#/			- Provided option is invalid.
+#/	- 0: Returned when:
+#/		- Help message is requested and produced.
+#/		- Processing is successful.
+#/	- 3: Returned when header/footer fails to be generated.
+#/	- 140: Returned when given option name is invalid.
+#/	- 141: Returned when:
+#/		- Provided indent value is negative.
+#/		- Provided max line length value is too small:
+#/			- Line length - prefix - postfix > 0.
+#/	- 142: Returned when a required option is not provided.
 #/
 #/ EXAMPLE(S):
 #/	output --help
@@ -144,10 +135,10 @@ IFS='' read -r -d '' OUTPUT_DOC <<"EOF"
 #/	output -m="line 1" -p --char="&&"
 #/
 #/ TODO(S):
-#/	- Implement: Dynamicly determine, based on last character of line being split up, if
-#/		a '-' is needed.
-#/	- Implement: Ability to append end of line that was too long to fit on one row to
-#/		the start of the next line.
+#/	- Implement: Dynamically determine, based on last character of line being
+#/		split up, if a '-' is needed.
+#/	- Implement: Ability to append end of line that was too long to fit on one
+#/		row to the start of the next line.
 #/	- Implement: Support for '%' as a formatting character.
 EOF
  ###############################
@@ -247,7 +238,7 @@ for fullArg in "${@}"; do
 		*)
 			printf "$errPrefix Calling function provided invalid option: '$fullArg', see doc:\n"
 			echo "$OUTPUT_DOC"
-			exit 20  ;;
+			exit 140  ;;
 	esac
 done
 
@@ -258,7 +249,7 @@ done
 if [[ -z "${msg[@]}" ]]; then
 	printf "$errPrefix Message text must be given, see doc:\n"
 	echo "$OUTPUT_DOC"
-	exit 2
+	exit 142
 fi
 
 ## Ensure Valid Indent Value Was Given ##
@@ -270,7 +261,7 @@ if [[ $indent -ge 0 ]]; then
 else
 	printf "$errPrefix Indentation value: '$indent' invalid. Must be non-negative, see doc:\n"
 	echo "$OUTPUT_DOC"
-	exit 3
+	exit 141
 fi
 # Remove prefix & postfix length from max message character(s) per line.
 if $prePostFix; then
@@ -282,7 +273,7 @@ fi
 if [[ $maxAlwMsgLen -lt 1 ]]; then
 	printf "$errPrefix Max line length of '$maxAlwLineLen' invalid because there's no room for message text. See Doc:\n"
 	echo "$OUTPUT_DOC"
-	exit 4
+	exit 141
 fi
 
  ########################
@@ -331,15 +322,26 @@ fi
 if $headerFooter; then
 	# Call function that creates header/footer.
 	if $prePostFix; then
-		createHeaderFooter --prefix -l=$maxGvnLineLen -c=$fChar
+		cmd="createHeaderFooter --prefix -l=$maxGvnLineLen -c=$fChar"
 	else
-		createHeaderFooter -l=$maxGvnLineLen -c=$fChar
+		cmd="createHeaderFooter -l=$maxGvnLineLen -c=$fChar"
 	fi
-	# Save off header/footer.
-	if [[ ! -z $indentTxt ]]; then
-		headerFooterTxt="$indentTxt$rtCreateHeaderFooter"
+	unset stdOut errOut rtOut
+	eval "$( (eval $cmd) \
+		2> >(errOut=$(cat); typeset -p errOut) \
+		 > >(stdOut=$(cat); typeset -p stdOut); rtOut=$?; typeset -p rtOut )"
+		 
+	# Ensure header/footer was generated successfully.
+	if [[ $rtOut -eq 0 ]]; then
+		# Save off header/footer.
+		if [[ ! -z $indentTxt ]]; then
+			headerFooterTxt="$indentTxt$stdOut"
+		else
+			headerFooterTxt=$stdOut
+		fi
 	else
-		headerFooterTxt=$rtCreateHeaderFooter
+		printf "$errPrefix createHeaderFooter() failed to create header/footer text.\n"
+		exit 3
 	fi
 fi
 
diff --git a/src/shell/functions/output/util/createHeaderFooter.sh b/src/shell/functions/output/util/createHeaderFooter.sh
old mode 100644
new mode 100755
index 39a686d73..aebabc5ca
--- a/src/shell/functions/output/util/createHeaderFooter.sh
+++ b/src/shell/functions/output/util/createHeaderFooter.sh
@@ -11,21 +11,19 @@
  #####################
 ## Local Variable(s) ##
  #####################
-# Used to return strings from local function(s).
-rtTxt=''
+# NoOp
 
 IFS='' read -r -d '' CREATE_HEADER_FOOTER_DOC <<"EOF"
 #/ DESCRIPTION:
-#/	Returns text intended to be used as a header or footer in the 'rtTxt' local
-#/	variable.
+#/	Returns text intended to be used as a header or footer in std out.
 #/
 #/ USAGE: createHeaderFooter [OPTIONS]... -l=<maxMsgLength>
 #/
 #/ NOTE(S):
 #/	- Method may not use the log function because this is used by that method.
-#/	- This method is in the same directory as output because a local variable is used by
-#/		this method to return a value to the output method when called by the output
-#/		method.
+#/	- This method is in the same directory as output because a local variable
+#/		is used by this method to return a value to the output method when
+#/		called by the output method.
 #/
 #/ OPTION(S):
 #/	-c=<formattingCharacter>, --char=<formattingCharacter>
@@ -33,16 +31,14 @@ IFS='' read -r -d '' CREATE_HEADER_FOOTER_DOC <<"EOF"
 #/			- Note: Default value: $DEFAULT_CHAR.
 #/			- Note: Some special characters may require two to be given:
 #/				-c="55"  _> %
-#/			- Note: Some *other* special characters may not work at all (ex. back
-#/				slash).
+#/			- Note: Some *other* special characters may not work at all (ex. back slash).
 #/		(OPTIONAL)
 #/	-h, --help
-#/		Print this help message. Function will return code of '0'. No processing will be
-#/		done.
+#/		Print this help message. Function will return code of '0'. No processing will be done.
 #/		(OPTIONAL)
 #/	-l=<maxMsgLength>, --lineLength=<maxMsgLength>
-#/		Max number of characters in any line of message. Used to determine how long
-#/		header/footer should be.
+#/		Max number of characters in any line of message. Used to determine how
+#/		long header/footer should be.
 #/			- Note: Line length only includes characters in message.
 #/		(REQUIRED)
 #/	--prefix
@@ -51,15 +47,11 @@ IFS='' read -r -d '' CREATE_HEADER_FOOTER_DOC <<"EOF"
 #/		(REQUIRED/OPTIONAL)
 #/
 #/ RETURN CODE(S):
-#/	- 0:
-#/		Returned when:
-#/			- Help message is requested OR
-#/			- Processing is successful.
-#/	- 1:
-#/		TODO: Returned when required option(s) are not provided.
-#/	- 20:
-#/		Returned when:
-#/			- Provided option is invalid.
+#/	- 0: Returned when:
+#/		- Help message is requested and produced.
+#/		- Processing is successful.
+#/	- 140: Returned when given option name is invalid.
+#/	- 142: TODO: Returned when required option(s) are not provided.
 #/
 #/ EXAMPLE(S):
 #/	createHeaderFooter --help
@@ -73,57 +65,58 @@ IFS='' read -r -d '' CREATE_HEADER_FOOTER_DOC <<"EOF"
 #/	- Display this message when required argument(s) are not provided.
 #/	- Move this function to its own file.
 EOF
-function createHeaderFooter {
-	 ###############################
-	## Reset/Set Local Variable(s) ##
-	 ###############################
-	# Tracks header/footer text.
-	rtTxt=''
-	# Tracks character used for formatting.
-	fChar=$DEFAULT_CHAR
-	# Tracks desired total length of header/footer.
-	declare -i len=2
+ ###############################
+## Reset/Set Local Variable(s) ##
+ ###############################
+# Tracks header/footer text.
+rtCreateHeaderFooter=''
+# Tracks character used for formatting.
+fChar=$DEFAULT_CHAR
+# Tracks desired total length of header/footer.
+declare -i len=2
 
-	 #####################
-	## Process Option(s) ##
-	 #####################
-	for fullArg in "${@}"; do
-		# Tracks value of current option.
-		declare arg=${fullArg#*=}
+ #####################
+## Process Option(s) ##
+ #####################
+for fullArg in "${@}"; do
+	# Tracks value of current option.
+	declare arg=${fullArg#*=}
+
+	# Determine what option user gave.
+	case $fullArg in
+		--prefix)
+			rtCreateHeaderFooter+=' '
+			len+=1  ;;
+		-l=*|--lineLength=*)
+			len+=$arg  ;;
+		-c=*|--char=*)
+			# Track user desired formatting character(s).
+			fChar=$arg
+			# Update desired header/footer length to accommodate formatting character(s).
+			if [[ ${#fChar} -gt 1 ]]; then
+				len+=$(($((${#fChar}-1))*2))
+			fi  ;;
+		-h|--help)
+			echo "$CREATE_HEADER_FOOTER_DOC"
+			exit 0  ;;
+		*)
+			printf "$(date +'%Y/%m/%d %H:%M:%S %Z') ERROR createHeaderFooter: Caller provided invalid option: '$fullArg', see doc:\n"
+			echo "$CREATE_HEADER_FOOTER_DOC"
+			exit 140  ;;
+	esac
+done
 
-		# Determine what option user gave.
-		case $fullArg in
-			--prefix)
-				rtTxt+=' '
-				len+=1  ;;
-			-l=*|--lineLength=*)
-				len+=$arg  ;;
-			-c=*|--char=*)
-				# Track user desired formatting character(s).
-				fChar=$arg
-				# Update desired header/footer length to accommodate formatting character(s).
-				if [[ ${#fChar} -gt 1 ]]; then
-					len+=$(($((${#fChar}-1))*2))
-				fi  ;;
-			-h|--help)
-				echo "$CREATE_HEADER_FOOTER_DOC"
-				exit 0  ;;
-			*)
-				printf "$(date +'%Y/%m/%d %H:%M:%S %Z') ERROR createHeaderFooter: Caller provided invalid option: '$fullArg', see doc:\n"
-				echo "$CREATE_HEADER_FOOTER_DOC"
-				exit 20  ;;
-		esac
-	done
+## Build Header/Footer ##
+while [[ ${#rtCreateHeaderFooter} -lt $len ]]; do
+	# When near the end, given formatting character(s) may need to be split up.
+	if [[ $((${#rtCreateHeaderFooter}+${#fChar})) -gt $len ]]; then
+		rtCreateHeaderFooter+=${fChar:0:$(($len-${#rtCreateHeaderFooter}))}
+	else
+		rtCreateHeaderFooter+=$fChar
+	fi
+done
+# Add final part of header.
+rtCreateHeaderFooter+='\n'
+echo "$rtCreateHeaderFooter"
+exit 0
 
-	## Build Header/Footer ##
-	while [[ ${#rtTxt} -lt $len ]]; do
-		# When near the end, given formatting character(s) may need to be split up.
-		if [[ $((${#rtTxt}+${#fChar})) -gt $len ]]; then
-			rtTxt+=${fChar:0:$(($len-${#rtTxt}))}
-		else
-			rtTxt+=$fChar
-		fi
-	done
-	# Add final part of header.
-	rtTxt+='\n'
-}
diff --git a/src/shell/functions/shellName.sh b/src/shell/functions/shellName.sh
index b787a22d5..c37f814aa 100755
--- a/src/shell/functions/shellName.sh
+++ b/src/shell/functions/shellName.sh
@@ -27,21 +27,15 @@ IFS='' read -r -d '' SHELL_NAME_DOC <<"EOF"
 #/  
 #/ OPTION(S):
 #/	-h, --help
-#/		Print this help message. Function will return code of '0'. No processing will be
-#/		done.
+#/		Print this help message. Function will return code of '0'. No processing will be done.
 #/		(OPTIONAL)
 #/ 
 #/ RETURN CODE(S):
-#/	- 0:
-#/		Returned when:
-#/			- Help message is requested OR
-#/			- Shell name has been found.
-#/	- 20:
-#/		Returned when:
-#/			- Given option is invalid.
-#/	- 21:
-#/		Returned when:
-#/			- Shell name couldn't be found for any reason.
+#/	- 0: Returned when:
+#/		- Help message is requested and produced.
+#/		- Shell name has been found.
+#/	- 3: Returned when shell name can't be found for any reason.
+#/	- 140: Returned when given option name is invalid.
 #/ 
 #/ EXAMPLE(S):
 #/	shellName
@@ -65,7 +59,7 @@ for fullArg in "${@}"; do
 		*)
 			echo "Invalid given argument: '$fullArg', see doc:"
 			echo "$SHELL_NAME_DOC"
-			exit 20  ;;
+			exit 140  ;;
 	esac
 done
 
@@ -90,6 +84,6 @@ if [[ "$SHELL" != "$shellName" && "$shellName" != "" ]]; then
 	exit 0
 else
 	printf "Failed, couldn't determine shell name from \$SHELL ($SHELL).\n"
-	exit 21
+	exit 3
 fi