Special Variables

[jwater7]

I'm trying to find documentation on these "special" variables I've been seeing 
in some makefiles:
$(TOOLS_OBJECTS:.o=): address@hidden
$$(@B).c
$(*F).c
$(TEST_EXES): $$(@R).o

I'm just having trouble figuring out what they are for, and why some of them 
fail (like the error below):
make *** No rule to make target '$(@B).c', needed by 'X86/test.o'.  Stop.

But I'm more interested in where I can get a list of these varaibles and what 
they are for.

Thanks