#here are some of the options you can specify to pack.
#learn about the different arguments they take..
#general explanatory non-functional code...


$emailLab=$mw->label->pack(-anchor=>'',-ipadx=>'',
                           -ipady=>'',-expand=>'', -fill=>'', 
                            -padx=>'', -pady=>'' );

##</code><code>##

#using frame widgets, general explanatory non-functional code


use Tk;
$main=MainWindow->new;
$frame=$main->Frame;
$frame->pack(pack options) or $frame->place(options);
$frame->Label()->pack();
MainLoop;

##</code><code>##