myDSL Extensions (deprecated) :: What are?
Hi,
There is a manual to learn more about Damn Small Linux?
What are DSL extensions and how can I use it?
Thanks! 
I don't believe there's a manual at this point, as things are in constant development/change. The best resource I've found so far are these forums
Extensions are packages, mainly applications, which can be loaded automatically or manually when you boot the live CD. I suppose they can be used with a harddrive installed DSL as well, but as far as I can tell using a .deb or source package makes more sense....that's just my opinion, though.
how can i use a .deb file?
dpkg -i file.deb
original here.