| ABS() | absolute value |
| ASC() | value of ASCII character |
| CHR$() | string with n characters of specified value |
| CJUST$() | center justify string in field of spaces |
| CLR() | clear a bit field |
| CSIZE() | size of C string (to 1st null byte) |
| CSIZE$() | string up to null terminator |
| CSTRING$() | clip string at 1st null byte |
| DHIGH() | high word of DOUBLE type |
| DLOW() | low word of DOUBLE type |
| DMAKE() | make DOUBLE type from two XLONGs |
| DOUBLE() | convert to DOUBLE type |
| DOUBLEAT() | direct memory access |
| ERROR() | return and/or set error number |
| ERROR$() | convert error number into error string |
| EXTS() | extract signed bit field |
| EXTU() | extract unsigned bit field |
| FIX() | fix rounding |
| FUNCADDR() | convert to FUNCADDR type |
| FUNCADDRAT() | direct memory access |
| FUNCADDRESS() | get address of function (type FUNCADDR) |
| GHIGH() | get high word of GIANT value |
| GIANT() | convert to GIANT type |
| GIANTAT() | direct memory access |
| GLOW() | get low word of GIANT value |
| GMAKE() | make GIANT from two XLONGs |
| GOADDR() | convert to GOADDR type |
| GOADDRAT() | direct memory access |
| GOADDRESS() | get address of GOTO label (type GOADDR) |
| HEX$() | n digit hexaDECimal string |
| HEXX$() | n digit hexaDECimal string with "0x" prefix |
| HIGH0() | bit # of highest 0 bit |
| HIGH1() | bit # of highest 1 bit |
| INCHR() | 1st character in string to match one in list |
| INCHRI() | case insensitive INCHR() |
| INSTR() | find string within string |
| INSTRI() | case insensitive INSTR() |
| INT() | integerize |
| LCASE$() | lower case a string |
| LCLIP$() | clip left n bytes from string |
| LEFT$() | left n characters of a string |
| LEN() | length of a string in elements |
| LIBRARY() | return TRUE if compiled as library |
| LJUST$() | left justify string in field of spaces |
| LTRIM$() | trim spaces and tabs from left end of string |
| MAKE() | make an arbitrary bit field |
| MID$() | extract arbitrary substring from a string |
| NULL$() | return string of null characters |
| PROGRAM$() | return program name defined by PROGRAM statement |
| RCLIP$() | clip right n bytes from string |
| RIGHT$() | right n characters of a string |
| RINCHR() | last character in string to match one in list |
| RINCHRI() | case insensitive RINCHR() |
| RINSTR() | reverse direction INSTR() |
| RINSTRI() | case insensitive RINSTR() |
| RJUST$() | right justify string in field of spaces |
| RND() | rounding |
| ROTATER() | n bit rotate right |
| ROUND() | rounding |
| RTRIM$() | trim spaces and tabs from right end of string |