There are two ways to change the numeric display format. There are a number of rules as to the variable names you can use. Variable names must be continuous. It is a good idea to use variable names that make sense. Underscores can be used to make names continuous.
Variables are case sensitive.
Flow, FlOw are all different variables Variables must start with a letter, followed by letters, digits, or underscores. The table on page 46 of the manual contains a number special variable names. Special variables can be redefined by you. This is very useful to in clarify a workspace that will be saved for later use, or for submission. This can be on a separate line or the same line as an executable command, It is the best way to specify the units on a number.