the name of the FILE is juts so you can remember which is which... and helps when you want to associate it with a command.

and yes, that is where you type the string you would like to associate with the key...
notice it shows you:

key >>> string

this is supposed to imply key turns into string.... string is sent to all clones... and if another keymap on a clone is being used,
that string will turn back into the key specified in THAT keymap file.

ie:

joe.kcl
--
LShift + A >>> opening.salvo


sam.kcl
--
5 >>> opening.salvo


notice the hotstring, opening.salvo, has no caps and no spaces. this is to limit the potential errors (you COULD use them, i would just recommend against it)
in this case.. you would load joe.kcl on wow1 (which is joe, let's say) and sam.kcl on wow2.

when you are on joe and hit LShift+A ... a 5 will be sent to sam.