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diff --git a/adoc/p_nip.adoc b/adoc/p_nip.adoc
index cc74eb7..1f99710 100644
--- a/adoc/p_nip.adoc
+++ b/adoc/p_nip.adoc
@@ -1,9 +1,19 @@
+// stack.asm:	WORD p_nip, 'NIP',fasm
+
 anchor:p_nip[]
 
-Word: NIP
-----------
+=== Word: NIP
+
+....
+Data stack: ( v1 v2 -- v2 )
+....
 
-----
-stack.asm:	WORD p_nip, 'NIP',fasm
-----
+"NIP" is a function word that discards the second of the top two cells
+on the data stack.
 
+====
+.Definition concept for NIP
+****
+: NIP SWAP DROP ;
+****
+====