diff --git a/vignettes/programming_strategy.Rmd b/vignettes/programming_strategy.Rmd
index 1bf4101a..724f20f4 100644
--- a/vignettes/programming_strategy.Rmd
+++ b/vignettes/programming_strategy.Rmd
@@ -208,15 +208,16 @@ Arguments which expect a boolean or boolean vector must start with a verb, e.g.,
 Arguments which only expect one value or variable name must be a singular version of the word(s), e.g., `missing_value` or `new_var`. Arguments which expect several values or variable names (as a list, expressions, etc.) must be a plural version of the word(s), e.g., `missing_values` or `new_vars`.
 
 ## List of Common Arguments
-
-| Argument Name   | Description                                                                                                        |
+| Argument Name   | Description                                                                                                         |
 |------------------|--------------------------------------------------------------------------------------------------------------------|
 | `dataset`        | The input dataset. Expects a data.frame or a tibble.                                                               |
+| `dataset_ref`    | The reference dataset, e.g. ADSL. Typically includes just one observation per subject.                             |
+| `dataset_add`    | An additional dataset. Used in some `derive_xx` and `filter_xx` functions to access variables from an additional dataset.            |
 | `by_vars`        | Variables to group by.                                                                                             |
-| `order`          | List of expressions for sorting a dataset, e.g., `exprs(PARAMCD, AVISITN, desc(AVAL))`.                             |
+| `order`          | List of expressions for sorting a dataset, e.g., `exprs(PARAMCD, AVISITN, desc(AVAL))`.                            |
 | `new_var`        | Name of a single variable to be added to the dataset.                                                              |
 | `new_vars`       | List of variables to be added to the dataset.                                                                      |
-| `new_var_unit`   | Name of the unit variable to be added. It should be the unit of the variable specified for the `new_var` argument.  |
+| `new_var_unit`   | Name of the unit variable to be added. It should be the unit of the variable specified for the `new_var` argument. |
 | `filter`         | Expression to filter a dataset, e.g., `PARAMCD == "TEMP"`.                                                         |
 | `start_date`     | The start date of an event/interval. Expects a date object.                                                        |
 | `end_date`       | The end date of an event/interval. Expects a date object.                                                          |
@@ -226,7 +227,7 @@ Arguments which only expect one value or variable name must be a singular versio
 | `set_values_to`  | List of variable name-value pairs. Use `process_set_values_to()` for processing the value and providing user friendly error messages. |
 | `subject_keys`   | Variables to uniquely identify a subject, defaults to `exprs(STUDYID, USUBJID)`. In function formals, use `subject_keys = get_admiral_option("subject_keys")`                                     |
 | `keep_source_vars` | Specifies which variables from the selected observations should be kept. The default of the argument should be `everything()`.                                          |
-| `missing_value`    | A singular value to be entered if the data is missing.                                  |
+| `missing_value`    | A singular value to be entered if the data is missing.                                                           |
 | `missing_values`   | A named list of expressions where the names are variables in the dataset and the values are a value to be entered if the data is missing, e.g., `exprs(BASEC = "MISSING", BASE = -1)`.      |
 
 ## Source Code Formatting