How To Store A Command As A Variable On TI-89?

Use a string variable: `Str1:=”command”`

Store the command text in a string, not as executable code

Use `expr(Str1)` to evaluate a stored command string

Use `expr(“2+3”)` to run a command saved as text

Use `Define` to create a user function if you need reusable behavior

Use `Local` or `Global` to manage the variable scope

Use `expr()` only for expressions the calculator can parse

Use `eval()` if you need to evaluate a stored expression in some contexts

Use `Exec` for running stored program names or program code

Use a program variable if you want to store multiple commands in a TI-BASIC program

Use `Input` or `Prompt` to build commands dynamically before evaluating them