Variables are character names to which are associated values. You get access to the value by using the name. The following commands are used in VISTA to manipulate variables:

- Arithmetic Expressions in VISTA
- SET: Define a VISTA Variable and Assign it a Value
- TYPE: Evaluate/Print Arithmetic Expressions
- ASK: Prompt for Numerical Input at the Keyboard
- Using Variables to Specify Buffer Numbers
- PRINTF: Formatted Display of Strings and Arithmetic Expressions
- STRING: Defining VISTA String Variables
- Substituting String Variables into the Command Line