CH1.DIR on 50g CD: How to STO on calc

[wojtek]

I have no this CD, so I can give general remarks only.
DIR
VOL <<......>>
SPH
is the contents of a directory displayed as text, so it cannot be executed

VOL <<....>> is a program code in text format to calculate volume of a sphera. If you'd like to execute it just put radius on the stack, then retype the code of VOL <<...>> and press Enter. Then press EVAL and you'll get the volume.

"Bad argument type" error you get because you tried to save with STO something to a variable with the name "0".
Variable name cannot begin with a digit. Try another name, "A0" for example and it should be OK.