+// rrqforth.asm: WORD p_execute,'EXECUTE',fasm
+
anchor:p_execute[]
-Word: EXECUTE
--------------
+=== Word: EXECUTE
+
+....
+Data stack: ( cfa -- )
+....
+
+"EXECUTE" is a function word that transfers the execution to the
+indicated "Code Field Address", which typically is the CFA of an
+RRQFORTH word with the CFA cell containing a jump address for the code
+that implements the execution semnatics of the word.
+
+The following execution semantics are predefined:
+
+ * assembler implemented words constitute their own execution
+ semantics;
+
+ * <<p_doforth>> implements the FORTH machine. This treats the word
+ content as a succession of cells that hold the cfa pointers for the
+ words that make of the definition. As is customary in FORTH
+ machines, the advance through that succession is provided by each
+ word code ending making an explicit jump to its successor. The
+ <<p_return_stack,RETURN-STACK>> serves as a call stack for tracking
+ the nesting of FORTH executions by saving the "addresses" of the
+ successor cells.
+
+ * <<p_dodoes>> implements the variation of starting the FORTH
+ execution somewhere within a definition rather than at the
+ beginning.
-----
-rrqforth.asm: WORD p_execute,'EXECUTE',fasm
-----
+ * <<p_dostring>>, <<p_dovalue>> and <<p_dovariable>> implement
+ different common ways of using word content other the as FORTH
+ definitions.
+