To enter the mit-scheme interpreter, first login to the systems in our department, then give the command 'scheme'.
After a while (it takes time to load the program from network), your screen will clear and you will get a prompt like below.
Scheme saved on Sunday November 21, 1993 at 9:15:23 PM Release 7.3.1 Microcode 11.146 Runtime 14.166 1 ]=>
The number in the prompt shows the level of the interpreter. You should work in the first level. To return back to first level from higher levels, press Ctrl-g key. Higher levels will be used later for debugging. For further information on control keys, press Ctrl-c key and ? key.
When you want to load a file (let the interpreter interpret the lines in that file) write the command (load "filename") in the interpreter.
To exit from the scheme interpreter, use the Ctrl-d key.