Arbortext Command Language > Using the Arbortext Command Language > Built-in Functions, Callbacks, and Hooks
  
Built-in Functions, Callbacks, and Hooks
Built-in functions, callbacks, and hooks are built into Arbortext Editor and may be used in expressions.
Use either of the following methods to display the help for a specific command:
At the Command line, enter the command help commandname, where commandname is the name of the desired command, function, callback, or hook.
In the Help Center, search for the name of the command, function, callback, or hook to view any topics mentioning the term.