See title...

This is caused by the fact that the server configuration on axiom-developer (MathAction) aggressively tries to cache all images for reasons of efficiency. It is supposed to be possible to configure the Apache web server to notice a change in the image file and send a cache invalid message to the front-end web cache (maybe it is a Squid server somewhere in the ISP RoseHosting? network but I am not sure), however I have not been able to get this to work. Caching of images can even occur at the level of the browser itself.

As a work-a-round, always remember to click page reload after editing the pamphlet file.