| Description: | Returns the number of characters in a string. | 
| Parameters: | String-Characters enclosed in quotation marks. | 
| Syntax: | $BFLen(string) | 
| Example: | $BFLen("Benchmark Factory") ; returns "17" | 
| Description: | Returns a string after converting uppercase characters to lowercase characters. | 
| Parameters: | String-Characters enclosed in quotation marks. | 
| Syntax: | $BFLowerstring) | 
| Example: | $BFLower("SAMPLING") ; returns "sampling" | 
| Description: | Extracts a substring from a string. | 
| Parameters: | String-Characters enclosed in a quotation marks. 
 nStart-The starting character position. 
 nLength-Number of characters to return. | 
| Syntax: | $BFMid(string, nStart,nLength) | 
| Example: | $BFMid("sunshine coast", 3, 5) ; returns "shine" | 
| Description: | Returns the last n character of a string. | 
| Parameters: | String-Characters enclosed in quotation marks. 
 nLength-The number of characters to return. | 
| Syntax: | $BFRight(string,nLength) | 
| Example: | $BFRight("sunshine coast", 3) ; returns "ast" |