| NEXT | inner interpreter |
|---|---|
| doVAR | ( — c-addr ) functionality of words created with CREATE and VARIABLE |
| doCONST | ( — x ) functionality of words created with CONSTANT |
| doCOLON | ( ix — ix ) und ( R: — nest-sys ) functionality of words created with : |
| EXIT | Execution: ( — ) und ( R: nest-sys — ) |
| BRANCH | ( — ) control structure primitive ELSE REPEAT |
| Runtime Support | ( flag — ) control structure primitive for IF WHILE UNTIL |
| doDO | ( n1 n2 — ) oder ( n1 n2 — ) |
| sowie ( R: — loop-sys ) control structure primitive DO | |
| doLOOP | ( — ) control structure primitive for LOOP |
| sowie ( R: loop-sys1 — ) | |
| oder auch ( R: loop-sys2 — ) | |
| doPLOOP | ( n — ) control structure primitve for +LOOP |
| sowie ( R: loop-sys1 — ) | |
| oder auch ( R: loop-sys2 — ) | |
| doLIT | ( — x ) runtim functionality for number literals, LITERAL, ['] and [CHAR] |