String Functions
Richard Guenette, James Vogel · Birkhäuser Boston eBooks · 1984
TI BASIC has many built-in functions for handling string variables. Strings, you’ll remember, are groups of characters enclosed in quotation marks such as “Hello there!” or “A = B + C.” The last character in a string variable name is always the dollar sign; for example, we could call “Hello there!” A$, or even HELLO$. Strings can be up to 255 characters long. You can link strings together with the ampersand (&). If A$ = “MOTOR” and B$ = “CYCLE,” then A$ & B$ = MOTORCYCLE.