bug fix !+

[rrq/rrqforth.git] / adoc / p_2over.adoc

diff --git a/adoc/p_2over.adoc b/adoc/p_2over.adoc
index 772d238b86f7ead92b75303b2ed1e688da0b0e37..fcfc184e7d29dc82abfb53d6c2188873075978d7 100644 (file)
--- a/adoc/p_2over.adoc
+++ b/adoc/p_2over.adoc
@@ -1,9 +1,20 @@
+// stack.asm:  WORD p_2over, '2OVER',fasm
+
 anchor:p_2over[]
 
-Word: 2OVER
-----------
+=== Word: 2OVER
+
+....
+Data stack: ( v1 v2 v3 v4 -- v1 v2 v3 v4 v1 v2 )
+....
 
-----
-stack.asm:     WORD p_2over, '2OVER',fasm
-----
+"2OVER" is a function word that replicates the second duble-cell pair
+onto the top of the data stack. This is similar to <<p_over,OVER>> but
+working with cell pairs rather than single cells.
 
+====
+.Definition concept for 2OVER
+****
+( v1 v2 v3 v4 -- v1 v2 v3 v4 v1 v2 ) : 2OVER 3 PICK 3 PICK ;
+****
+====