GNU Octave
1.3.5.3 A Sample Variable Description
A variable is a name that can hold a value. Although any variable
can be set by the user, built-in variables typically exist
specifically so that users can change them to alter the way Octave
behaves (built-in variables are also sometimes called user
options). Ordinary variables and built-in variables are described
using a format like that for functions except that there are no
arguments.
Here is a description of the imaginary variable
do_what_i_mean_not_what_i_say.
- Built-in Variable: do_what_i_mean_not_what_i_say
- If the value of this variable is nonzero, Octave will do what you
actually wanted, even if you have typed a completely different and
meaningless list of commands.
Other variable descriptions have the same format, but `Built-in
Variable' is replaced by `Variable', for ordinary variables, or
`Constant' for symbolic constants whose values cannot be changed.
