invalid command name "toplevel"
    while executing
"toplevel .f"
    (in namespace eval "::request" script line 3)
    invoked from within
"namespace eval ::request $script"
    ("::try" body line 12)
OUTPUT BUFFER:
#!/usr/local/bin/wish

toplevel .f
frame .f.f
pack .f.f
canvas .f.f.c -height 10 -width 100 \
	-xscrollcommand ".f.sx set" \
	-yscrollcommand ".f.f.sy set" \
	-scrollregion [list 200 0 1000 1000]
scrollbar .f.f.sy -command ".f.f.c yview"
pack .f.f.c .f.f.sy -side left -fill y -expand 1
scrollbar .f.sx -orient horizontal -command ".f.f.c xview"
pack .f.sx -side bottom -fill x -expand 1

set offset 5
for {set i 0} {$i < 100} {incr i} {
    set xm [expr $i*100+$offset]
    set xx [expr ($i+1)*100]
    .f.f.c create rectangle $xm 10 $xx 110 -fill blue
    .f.f.c create text $xm 15 -text "$i"
}