Changes

If you're planning to write a new, Firefox-specific extension, the add-on SDK (Jetpack) may be your best option. It is well supported in older versions of Firefox and is well-documented. However, make sure to read [https://developer.mozilla.org/en-US/Add-ons/SDK/Guides/Multiprocess_Firefox_and_the_SDK "Multiprocess Firefox and the SDK"] to ensure your add-on is compatible with Electrolysis.

=== Won't this limit experimentation? ===