base.tmpl

####################### base.tmpl #######################
#from Cheetah import Template 
#extends Template.Template

#def sidebar()
#end def

#def footer()
#end def

#def header()
#end def

#def canvas()
#end def 

$header()
<!-- other markup and such goes here -->
$sidebar()
$canvas()
<!-- other markup and such goes here -->
$footer()

subclass.tmpl

####################### subclass.tmpl #######################
#import base
#extends base.base

#def canvas()

This is my page specific canvas method! With my canvas markup :D

#end def