Lists the properties of the input object (its name, shape, type and value), and all the sub-components of that object if appropriate.
By default only the first element of structure arrays is listed, but this can be changed using the FULL keyword. Fine details of the layout can be controlled using the identation parameters.
Output is to the T(erminal), the default P(rinter), a N(ewfile) with logical name AST_LIST or appended to an existing O(ldfile) of the same name. By default output is to the terminal.