plOptUsage
( | ); |
Prints the usage and syntax message. The message can also be
display using the -h command line option. There is a default
message describing the default plplot options. The usage
message is also modified by plSetUsage and plMergeOpts.
program_string
(const char *, input)
String to appear as the name of program.
usage_string
(const char *, input)
String to appear as the usage text.
This function is currently available in C, C++, Java, Ocaml, Octave and Python.
This function is not used in any examples.