diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 5732182..a28e98e 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -50,6 +50,6 @@ jobs:
           # either 'goreleaser' (default) or 'goreleaser-pro'
           distribution: goreleaser
           version: latest
-          args: release --clean --snapshot
+          args: release --clean 
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/datarecord/datarecord.go b/datarecord/datarecord.go
index 90f91d2..11dde98 100644
--- a/datarecord/datarecord.go
+++ b/datarecord/datarecord.go
@@ -17,6 +17,7 @@ type dataReader struct {
 	dateFormat  string
 	dateColumn  int
 	pivotColumn int
+	delimiter   []byte
 
 	columnNames map[string]void
 	points      int
@@ -61,6 +62,11 @@ func (obj *dataReader) WithPivotColumn(column int) *dataReader {
 	return obj
 }
 
+func (obj *dataReader) WithDelimiter(delimiter string) *dataReader {
+	obj.delimiter = []byte(delimiter)
+	return obj
+} 
+
 func (obj *dataReader) ReadDataRecord(data string) {
 	record := obj.getDataRecord(data)
 
@@ -158,7 +164,14 @@ func (obj *dataReader) getColumnNames() []string {
 
 func (obj *dataReader) getDataRecord(data string) (record dataRecord) {
 	scan := bufio.NewScanner(strings.NewReader(data))
-	scan.Split(bufio.ScanWords)
+
+	onDelimiter := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
+		if i := bytes.Index(data, obj.delimiter); i >= 0 {
+			return i + len(obj.delimiter), data[:i], nil
+		}
+		return 0, data, bufio.ErrFinalToken
+	}
+	scan.Split(onDelimiter) //bufio.ScanWords
 
 	record.points = make([]float32, 0, 5)
 
diff --git a/datarecord/datarecord_test.go b/datarecord/datarecord_test.go
index 958ec34..4b4c2b0 100644
--- a/datarecord/datarecord_test.go
+++ b/datarecord/datarecord_test.go
@@ -12,6 +12,7 @@ func TestGetDataRecord(t *testing.T) {
 	var reader dataReader
 	reader.dateFormat = "20060102150405"
 	reader.dateColumn = 1
+	reader.delimiter = []byte{' '}
 
 	type args struct {
 		data string
@@ -40,6 +41,7 @@ func TestGetDataRecordPivot(t *testing.T) {
 	reader.dateFormat = "20060102150405"
 	reader.dateColumn = 1
 	reader.pivotColumn = 2
+	reader.delimiter = []byte{' '}
 
 	type args struct {
 		data string
diff --git a/readme.md b/readme.md
index 90959d5..568607b 100644
--- a/readme.md
+++ b/readme.md
@@ -1,3 +1,9 @@
 
-Usage of C:\Users\worker\Documents\toGraph\toGraph.exe:
+Usage of toGraph:
   -h    print usage
+  -pc int
+        pivot column
+  -t string
+        time field format (YYYY-MM-DDTHH:mm:SS.ssssss) (default "YYYYMMDDHHmmSS")
+  -tc int
+        ordinal number of the column with time (default 1)
\ No newline at end of file
diff --git a/statecontext/config.go b/statecontext/config.go
index 49d8863..3567cd2 100644
--- a/statecontext/config.go
+++ b/statecontext/config.go
@@ -14,6 +14,7 @@ type Configuration struct {
 	DateFormat string
 	DateColumn int
 	PivotColumn int
+	Delimiter string
 
 	programName string
 	printUsage  bool
@@ -56,7 +57,7 @@ func readCommandLineArguments(config *Configuration, args []string) (fs *flag.Fl
 	fs.StringVar(&config.DateFormat, "t", "YYYYMMDDHHmmSS", "time field format (YYYY-MM-DDTHH:mm:SS.ssssss)")
 	fs.IntVar(&config.DateColumn, "tc", 1, "ordinal number of the column with time")
 	fs.IntVar(&config.PivotColumn, "pc", 0, "pivot column")
-	// fs.StringVar(&config.LogOutputPath, "o", "", "log output file")
+	fs.StringVar(&config.Delimiter, "d", " ", "field separator")
 
 	if len(args) == 0 {
 		return nil, errEmptyArgumentList
diff --git a/statecontext/config_test.go b/statecontext/config_test.go
index 9d7da12..6b10102 100644
--- a/statecontext/config_test.go
+++ b/statecontext/config_test.go
@@ -19,29 +19,34 @@ func Test_readCommandLineArguments(t *testing.T) {
 			want{Configuration{
 				DateFormat: "YYYYMMDDHHmmSS",
 				DateColumn: 1,
+				Delimiter: " ",
 				printUsage: false}, errEmptyArgumentList}},
 		{"test 1", []string{"programname"},
 			want{Configuration{
 				DateFormat:  "YYYYMMDDHHmmSS",
 				DateColumn:  1,
+				Delimiter: " ",
 				programName: "programname",
 				printUsage:  true}, nil}},
 		{"help", []string{"programname", "-h"},
 			want{Configuration{
 				DateFormat:  "YYYYMMDDHHmmSS",
 				DateColumn:  1,
+				Delimiter: " ",
 				programName: "programname",
 				printUsage:  true}, nil}},
 		{"dateFormat", []string{"programname", "-t", "YYMMDDHHmm"},
 			want{Configuration{
 				DateFormat:  "YYMMDDHHmm",
 				DateColumn:  1,
+				Delimiter: " ",
 				programName: "programname",
 				printUsage:  true}, nil}},
 		{"dateColumn", []string{"programname", "-tc", "2"},
 			want{Configuration{
 				DateFormat:  "YYYYMMDDHHmmSS",
 				DateColumn:  2,
+				Delimiter: " ",
 				programName: "programname",
 				printUsage:  true}, nil}},
 		{"test 2", []string{"programname", "what"},
@@ -49,18 +54,21 @@ func Test_readCommandLineArguments(t *testing.T) {
 				InputFiles:  []string{"what"},
 				DateFormat:  "YYYYMMDDHHmmSS",
 				DateColumn:  1,
+				Delimiter: " ",
 				programName: "programname"}, nil}},
 		{"test 3", []string{"programname", "what", "where"},
 			want{Configuration{
 				InputFiles:  []string{"what", "where"},
 				DateFormat:  "YYYYMMDDHHmmSS",
 				DateColumn:  1,
+				Delimiter: " ",
 				programName: "programname"}, nil}},
 		{"test 4", []string{"programname", "newLine", "what", "where"},
 			want{Configuration{
 				InputFiles:  []string{"newLine", "what", "where"},
 				DateFormat:  "YYYYMMDDHHmmSS",
 				DateColumn:  1,
+				Delimiter: " ",
 				programName: "programname"}, nil}},
 	}
 	for _, tt := range tests {
diff --git a/toGraph.go b/toGraph.go
index 814c8da..85ee013 100644
--- a/toGraph.go
+++ b/toGraph.go
@@ -17,9 +17,9 @@ var checkErr = func(err error) {
 	}
 }
 
-// TODO: truncate file
 // TODO: delimiter
 // TODO: column names
+// TODO: graph name + output file name
 
 func main() {
 	state.InitState()
@@ -49,6 +49,7 @@ func processFile(sIn io.Reader, sOut io.Writer, config state.Configuration) erro
 	reader.WithDateFormat(config.DateFormat)
 	reader.WithDateColumn(config.DateColumn)
 	reader.WithPivotColumn(config.PivotColumn)
+	reader.WithDelimiter(config.Delimiter)
 
 	dataGraph, err := template.New("dataGraph").Parse(graphTemplate)
 	checkErr(err)