$ perldoc Tk::Button
BUTTON(1)             User Contributed Perl Documentation            BUTTON(1)

NAME
       Tk::Button - Create and manipulate Button widgets

SYNOPSIS
       $button = $parent->Button(?options?);

STANDARD OPTIONS
       -activebackground -activeforeground -anchor -background -bitmap
       -borderwidth -compound -cursor -disabledforeground -font -foreground
       -highlightbackground -highlightcolor -highlightthickness -image
       -justify -padx -pady -relief -repeatdelay -repeatinterval -takefocus
       -text -textvariable -underline -wraplength

       See Tk::options for details of the standard options.

##</code><code>##

       Name:     activeBorderWidth
       Class:    BorderWidth
       Switch:   -activeborderwidth
           Specifies a non-negative value indicating the width of the 3-D
           border drawn around active elements.  See above for definition of
           active elements.  The value may have any of the forms acceptable to
           Tk_GetPixels.  This option is typically only available in widgets
           displaying more than one element at a time (e.g. menus but not
           buttons).