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CloseFoxReplace 0.17.1.1-signed.1-let-fixed
by Marc
Lets you replace text in web pages. You can define a substitution list and apply it automatically or at your own discretion, or make individual substitutions. You can use this as a filter, or just for fun :)
This add-on is not compatible with your version of Firefox because of the following:
About this Add-on
You can do individual substitutions or define a list of substitutions to apply all at once. You can define substitution lists that apply only to pages that match an URL. You also have the option to apply the substitution list automatically whenever a page is loaded.
If you need usage instructions, you can find them at Tools -> FoxReplace -> Help or Firefox menu -> Replace... -> Help (once the extension has been installed).
Possible future features: RegExp editor, undo, automatic substitutions on AJAX pages, etc. These are ideas, but it doesn't mean that all of them can be implemented.