# evaltool Extension Micro-Prototyping for simple creatures. Compatible with the more specific-purpose [httptool](https://git.estrogen.zone/httptool.git/about) (Use that if it's sufficient for your use-case instead, please). > **Note to non-technical users: This extension can be used for [Self-XSS](https://en.wikipedia.org/wiki/Self-XSS). It's meant only for developers. Do not use it if not a developer.** ## Editing the script Once installed, go to `about:extensions` -> evaltool -> Preferences, then edit shit. ## Opening a larger (full-screen) editor Press Alt+Backslash to re-open the editor in a new tab. Note that if you have multiple editors open, whichever editor makes the most recent change is the one that gets saved. ## Applying Changes Changes are autosaved on edit, however to apply them, you need to disable and re-enable the addon, or restart the browser. This is to prevent us from needing to handle unregistering & re-registering anything. ## Icon Source https://www.deviantart.com/transparentjiggly64/art/Blahaj-facing-sideways-989660804 ## Something not working? If something you're doing doesn't work, you probably need to enable one of the many optional permissions.