Texas Instruments TITANIUM TI-89 - Manual (Page 291)

Constants and Measurement Units 291
Rules for User-Defined Unit Names Rules for User-Defined Unit Names Rules for User-Defined Unit Names Rules for User-Defined Unit Names
The naming rules for units are similar to variables.
• Can have up to 8 characters.
• First character must be an underscore. For _ , press:
8 5
• Second character can be any valid variable name character except _ or a digit. For
example, _9f is not valid.
• Remaining characters (up to 6) can be any valid variable name character except an
underscore.
Defining a Unit Defining a Unit Defining a Unit Defining a Unit
Define a unit the same way you store to a variable.