OK - done (2743) - I followed the instructions on http://code.google.com/p/pharo/wiki/HowToContribute - which are great (by the way there are a few typos in that text, and here are simple corrections - i think its fairly easy to spot the sections they replace):

You can find the license that you should sign here: http://code.google.com/p/pharo/wiki/LicenseAgreement. 

We value your fixes and we always try to look at them and give feedback to you, this works best if you create a bug entry in the bug tracker. Without it we may have problem giving you feedback or letting you know that there is another fix. 

The most important point is that you check your fix in a fresh (probably latest) image. There are two alternatives to packaging your code: You can send a changeset or a set of packages. For complex changes that involves several packages use a slice as there is a much better merging support. While we prefer packages, if it is easier for you send changesets, then we accept those too.  

Prepare a changeset with your changes. File it out. Important: Put your Full name instead of your initials, as it will help up to contact you which is often necessary. Only alphabetical characters, and Do Not use any spaces.

 

Tim