atoi                Convert character to ascii or string to integer     ;display_bmhelp "atoi"
 compress            Compress consecutive whitespace characters          ;display_bmhelp "compress"
 index               Locate first occurance of one string in another     ;display_bmhelp "index"
 key_to_int          Convert mnemonic key string to an integer           ;display_bmhelp "key_to_int"
 lower               Convert a string to all lower case characters       ;display_bmhelp "lower"
 ltrim               Remove leading white space from string              ;display_bmhelp "ltrim"
 printf              Print message to DOS standard output (debug)        ;display_bmhelp "printf"
 read                Get characters starting at current location         ;display_bmhelp "read"
 rindex              Locate last occurance of one string in another      ;display_bmhelp "rindex"
 search_string       Search a string for another string                  ;display_bmhelp "search_string"
 sprintf             Formatted print into a string                       ;display_bmhelp "sprintf"
 strlen              Get length of a string                              ;display_bmhelp "strlen"
 substr              Extract substring from a string                     ;display_bmhelp "substr"
 trim                Remove trailing whitespace from string              ;display_bmhelp "trim"
 upper               Convert string to upper case characters             ;display_bmhelp "upper"