Where to create variables: Home or CAS view?

[CR Haeger]

Hi Dominik,

I still have confusion on the best way/places to create variables:
- Vars > Cas or User
- Vars > Home
- Toolbox > User

I tend NOT to save anything into X or x as these are used often as independent variables.

Here is a thread I started as I was hoping to use formulas and/or expressions for multiple uses on the Prime:http://www.hpmuseum.org/forum/thread-417.html