| Subroutine Name | Operation | 
| IsAlpha( ) | Determine whether the characters in a string are alphabetic. | 
| IsAlphaNumeric( ) | Determine whether the characters in a string are alphanumeric. | 
| IsAlphaNumericOrPunc( ) | Determine whether the characters in a string are alphanumeric or punctuation marks. | 
| IsAlphaOrPunc( ) | Determine whether the characters in a string are alphabetic characters or punctuation marks. | 
| IsASCII( ) | Determine whether the characters in a string are ASCII characters. | 
| IsDigit( ) | Determine whether the characters in a string are integers. | 
| IsDigitOrPunc( ) | Determine whether the characters in a string are digits or punctuation marks. | 
| PadString( ) | Add a number of pad characters to the front or rear of a string. | 
| ReserveString( ) | Reverse the order of characters in a string. | 
| StripToFloat( ) | Return a numeric string as a float. | 
| StripToInteger( ) | Return a numeric string as an integer. | 
| SubString( ) | Extract characters from a string. | 
| ToLower( ) | Convert the characters in a string to lowercase. | 
| ToUpper( ) | Convert the characters in a string to uppercase. | 
| TrimEnds( ) | Remove leading and trailing blanks in a string. |