added dup to doc

2025-12-17 04:21:01 +01:00 · 2023-11-12 20:28:05 +01:00
parent 2fb1c7e7ad
commit 1379d62c9e
2 changed files with 2 additions and 0 deletions
--- a/rpn.go
+++ b/rpn.go
@@ -160,6 +160,7 @@ DESCRIPTION
        shift                remove the last element of the stack
        reverse              reverse the stack elements
        swap                 exchange the last two stack elements
+        dup                  duplicate last stack item
        history              display calculation history
        help|?               show this message
        quit|exit|c-d|c-c    exit program