When doing development work, from time to time it is handy to be able to look up documentation. Bookmarking manuals is handy, but often you still need to search for the function you’re after. Firefox, and possibly other browsers (not Chrome or Chromium), allows you to setup a keyword bookmark linked to a search.
I’ve setup a few search bookmarks for development resources. This is how I’ve done it:
Select Bookmarks > Organise Bookmarks… from the menu.