Word: C, -------- anchor:p_Ccomma[] ---- compile.asm: WORD p_Ccomma,'C,',fasm ---- Data stack: ( v -- ) "C," is a function word that puts a byte on the heap. It stores the least significant byte of the value to the current free heap address, and increments that. .Execution semantics expressed in RRQFORTH ==== : C, HERE @ 1 ALLOT C! ( v -- ; Claim 1 byte and put lsb value there ) ; ====