PBT

Major Section:  HISTORY

Examples:
:pbt :max      ; print back through the most recent command
:pbt :x        ; print back through the most recent command
:pbt fn        ; print back through the introduction of fn
:pbt 5         ; print back through the fifth command executed
:pbt (:x -4)   ; print back through the most recent five commands

Pbt takes one argument, a command descriptor, and prints the commands from :max (aka :x) through the one described. See command-descriptor for a description of what a command descriptor is. See pc for a description of the format used to display commands. Pbt will print the commands that ubt will undo.