#!/usr/bin/wish
proc hide { } {
pack forget .f
}

proc show { } {
 #frame .f (if you remove these comments the frame and the labels will be giving errors. they are already defined)
 #label .l -text "lab1"
 #label .l2 -text "lab2"
pack  .f
pack .l -in .f
pack .l2 -in .f

 }

button .bh -text "hide" -command "hide"
button .bs -text "show" -command "show"
frame .f
label .l -text "lab1"
label .l2 -text "lab2"
pack .bh .bs .f
pack .l -in .f
pack .l2 -in .f