added dup to doc

2025-12-18 21:11:02 +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.pod
+++ b/rpn.pod
@@ -167,6 +167,7 @@ Commands:
    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