+1 points for every 100 words
+1 points for every child element that has > 100 words
-1 points if the section name contains the word 'nav'
-2 points if the section name contains the word 'advert'

# Import the Template class.
>>> from templatemaker import Template

# Create a Template instance.
>>> t = Template()

# Learn a Sample String.
>>> t.learn('<b>this and that</b>')

# Output the template so far, using the "!" character to mark holes.
# We've only learned a single string, so the template has no holes.
>>> t.as_text('!')
'<b>this and that</b>'

# Learn another string. The True return value means the template gained
# at least one hole.
>>> t.learn('<b>alex and sue</b>')
True

# Sure enough, the template now has some holes.
>>> t.as_text('!')
'<b>! and !</b>'