i guess the taskbar etc things are in a separate *.rc file if you can't find them in the step.rc
look for "include" lines in the step file. if an include command turns up, ls first reads the file specified in the command and then continues with the original file. that means as if the other rc-file would have been in the original file. but i think you knew that already. (then why did i write it?)
anyway, some developers prefer to divide different parts of code into different files. look for comments in *.rc files and check out the config folder. find out what the *.rc files in there are for.
good luck ;)