RPL programming questions

[Raymond Del Tondo]

I don't know who told you to avoid local variables, but it's plain nonsense.

Local vars are an elegant way to manage parameters and more.

However many tasks can be performed efficiently by using the data stack for holding parameters and variables, but there are various situations where local vars are more practical.
And if you dive deeper into RPL, and learn how to create and use Parameterized Outer Loops, or input forms (which are a special case of a POL),
then it's very likely you will make use of local vars;-)

HTH