firefox multi-tab home

Long ago I knew that firefox supported multiple-tabs for the "Home Page". And then I forgot.

Just the other day I rediscovered this. It's very convenient. My "Home Page(s)" button now opens

• a cacti tab to monitor the database server, our internal time tracking web page,
  
• a gmail tab,
  
• a tab that opens our internal doxygen documentation and,
  
• because I'm studying svnmerge, since I've been waiting for decent merge support in svn since early svn betas:
  

  Ken Kinder on "Subversion merge tracking with svnmerge"