About this extension

In tribute to the late Sir Terry Pratchett many websites are adding the message "GNU Terry Pratchett" into the html header "X-Clacks-Overhead". This plugin allows you to see when a website is using the header and read the message included. The message is also displayed visually in the semaphore style from the upcoming board game "Clacks" by Backspindle Games.

Concept: Richard Atha-Nicholls
Art: Amy Atha-Nicholls
Coding: Rob Grundy

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Release notes for 0.4

Changed the code to use web extensions for compatibility with the latest Firefox release which had broken the previous version.

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