### 11.10 Commands

Commands are a special class of functions that only accept string input arguments. A command can be called as an ordinary function, but it can also be called without the parentheses like the following example shows

         my_command hello world

which is the same as

         my_command("hello", "world")

The general form of a command call is

         name arg1 arg2 ...

which translates directly to

         name ("arg1", "arg2", ...)

A function can be used as a command if it accepts string input arguments. To do this, the function must be marked as a command, which can be done with the `mark_as_command` command like this

         mark_as_command name

where `name` is the function to be marked as a command.

One difficulty of commands occurs when one of the string input arguments are stored in a variable. Since Octave can't tell the difference between a variable name, and an ordinary string, it is not possible to pass a variable as input to a command. In such a situation a command must be called as a function.

— Built-in Function: mark_as_command (name)

> This function is obsolete and will be removed from a future version of Octave.

— Built-in Function: unmark_command (name)

> This function is obsolete and will be removed from a future version of Octave.

— Built-in Function: iscommand (name)

> This function is obsolete and will be removed from a future version of Octave.

— Built-in Function: mark_as_rawcommand (name)

> This function is obsolete and will be removed from a future version of Octave.

— Built-in Function: unmark_rawcommand (name)

> This function is obsolete and will be removed from a future version of Octave.

— Built-in Function: israwcommand (name)

> This function is obsolete and will be removed from a future version of Octave.