The syntax of ARD (ASCII Region Definition) text is as described in
SUN 183. It can be entered in one of two ways - as direct text or
as a file containing one or more lines of ARD description. When
entering text directly, multiple lines may be entered by terminating
the line with ' ', '-' or '\'. The description string may be
broken anywhere except in the middle of a number. Note that these
continuation characters are stripped out and are not needed in files
of multiple lines. When giving a filename, then the name by itself
should be sufficient, although it can be prefixed by the indirection
symbol '^'.