The ∟ Command

Command Summary

Indicates the beginning of a custom list.

Command Syntax


Menu Location

While editing a program, press:

  1. 2nd LIST to access the List menu
  2. RIGHT to access the OPS submenu
  3. 2nd B to select ∟, or use arrows

Calculator Compatibility


Token Size

1 byte

The ∟ command indicates the beginning of a custom list (i.e., any list the user creates, not including the default lists L₁L₆). You almost always need to include this when accessing or manipulating a custom list. The maximum length of the list name (not including the ∟) is five letters. ∟ABCDE works, but ∟ABCDEF does not.


You don't need to include the ∟ command when storing (→) to a list. Some of the list commands also allow for this optimization, such as SetUpEditor. However, it can create problems when using Input and Prompt because you might only be asking the user to input a list, but a real variable would also be allowed.

Error Conditions

  • ERR:SYNTAX is thrown if you try to reference/create a list with more than 5 characters in its name.
  • ERR:UNDEFINED is thrown if you try to use ∟ on an undefined list.

Related Commands


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