Description:

uptodate can tell you when a new version of a program is avaible. To
do that, you have to add a module. Lets try with zope :

uptodate auto zope \
http://www.zope.org/Products/ \
2.7.4 \
A leading open source application server

uptodate auto command takes three arguments:
+ a name
+ url where it will search version
+ the current version number
+ an optional comment

uptodate auto try to find a regular expression which will be used
to find new versions. If uptodate auto can't find a regular
expression, or if the regular expression isn't good enough for you, you
can use uptodate add :

uptodate add zope \
http://www.zope.org/Products/ \
'Download Zope (.{1,10})\s*</a>' \
A leading open source application server

arguments are the same, but the third is regular expression instead of
version.

You can now check for new versions with

uptodate check zope

it will display something like

zope: '2.7.4' removed.
zope: '2.7.5' added.

if versions found in the text have changed.