basic commands

I have a Keithley application note for the Franck-Hertz experiment.
It contains some BASIC code for control and data collection. The dialect
of BASIC doesn't seem to be identified. I don't recognize some of the
commands and can't guess what they mean. On the other hand, I don't use
BASIC very often. They are:
FIND
READ
WINDOW

If you know what they are please let me in on it.
-- 
Ignorantly,
Allan Adler <ara@[EMAIL PROTECTED]
>
* Disclaimer: I am a guest and *not* a member of the MIT CSAIL. My actions
and
* comments do not reflect in any way on MIT. Also, I am nowhere near
Boston.