| GHIGH() | Intrinsic | extract high 32-bits from GIANT |
| GIANT | Statement | declare variable to be type GIANT |
| GIANT() | Intrinsic | convert to type GIANT |
| GIANTAT() | Intrinsic | write GIANT value into specified memory address |
| GIANTAT() | Intrinsic | read GIANT value from specified memory address |
| GLOW() | Intrinsic | extract low 32-bits from GIANT |
| GMAKE() | Intrinsic | create GIANT from two 32-bit integers |
| GOADDR | Statement | declare variable to be type GOADDR |
| GOADDR() | Intrinsic | convert to type GOADDR |
| GOADDRESS() | Intrinsic | get address of GOTO label |
| GOSUB | Statement | call a local subroutine |
| GOTO | Statement | jump to a local label |
| HEX$() | Intrinsic | create hexaDECimal string form of integer |
| HEXX$() | Intrinsic | HEX$ with "0x" prefix |
| HIGH0() | Intrinsic | find bit number of most significant 0 bit |
| HIGH1() | Intrinsic | find bit number of most significant 1 bit |
| IF | Statement | IF TRUE test in IF ... ENDIF block |
| IFF | Statement | IF FALSE test in IF ... ENDIF block |
| IFT | Statement | IF TRUE test in IF ... ENDIF block |
| IFZ | Statement | IF ZERO test in IF ... ENDIF block |
| IMPORT | Statement | import function library |
| INC | Statement | increment a variable |
| INCHR() | Intrinsic | find first search-set character in string |
| INCHRI() | Intrinsic | case insensitive INCHR() |
| INFILE$() | Intrinsic | input string from file |
| INLINE$() | Intrinsic | input string from main console |
| INSTR() | Intrinsic | find first substring in string |
| INSTRI() | Intrinsic | case insensitive INSTR() |
| INT() | Intrinsic | integer part of number |
| INTERNAL | Statement | declare function to have INTERNAL scope |
| LCASE$() | Intrinsic | convert contents of string to lower case |
| LCLIP$() | Intrinsic | clip n bytes from left end of string |
| LEFT$() | Intrinsic | leftmost n characters of string |
| LEN() | Intrinsic | number of elements in string |
| LIBRARY | Statement | reserved |
| LIBRARY() | Intrinsic | returns TRUE if compiled as library |
| LJUST$() | Intrinsic | left justify string in field of spaces |
| LOF() | Intrinsic | length of file in bytes |
| LOOP | Statement | end DO ... LOOP block |
| LTRIM$() | Intrinsic | trim spaces and tabs from left of string |
| MAKE() | Intrinsic | make a bit-field |
| MAX() | Intrinsic | return maximum of two arguments (larger) |
| MID$() | Intrinsic | extract arbitrary part of string |
| MIN() | Intrinsic | return minimum of two arguments (smaller) |
| MOD | Operator | arithmetic MODULUS operator |
| NEXT | Statement | end FOR ... NEXT loop |
| NOT | Operator | bitwise NOT operator (invert all bits) |
| NULL$() | Intrinsic | create string of n null characters |
| OCT$() | Intrinsic | octal string from integer (1234567012...) |
| OCTO$() | Intrinsic | octal string from integer (0o1234567012...) |
| OPEN() | Intrinsic | open a disk, console, or communications file |
| OR | Operator | bitwise OR operator |