Q: How does the [replace] functionality work?
importScript('User:Hannes Röst/autoSearchAndReplace.js'); //search and replace wordsThis works on de and en Wikipedia. Then you can click on the [replace] links which will open a new tab, allow you to review your changes and then save them (e.g. using Alt-Shift-S). However, be careful: you can only do one replace per page at a time (otherwise you overwrite your previous change). If you have more than one change, use the "edit" link.
Q: Where is the source code?
Q: Where can I get help?
A: Try my userpage on Wikipedia.