Arguments to routines and command-line options for programs are described by
using a plus (+), period (.), and minus (-)
in the first column, followed by one or more spaces.
The name of the argument or command line variable is next.
Several arguments may be placed together, separated with spaces and/or commas.
To include a hyphen (-) in the argument,
prefix it with a backslash (\).
Follow this with one or more spaces, then a dash (-), optional spaces,
and finally the
text of the description. The description may use multiple lines.
The + should be used to start an argument list and - should be
used to end the list. The period (.) should be used for all other
arguments in the list.
+ a - Pointer to the data item . i, j - Sizes of data item . str - Another argument value - \-arg value - Sample command-line argumentThe + and - are optional but recommended. They permit better formatting of lists of arguments.