plxormod - Enter or leave xor mode
Enter (when mode is true) or leave (when mode is false) xor mode for those drivers (e.g., the xwin driver) that support it. Enables erasing plots by drawing twice the same line, symbol, etc. If driver is not capable of xor operation it returns a status of false.
Redacted form: plxormod(mode, status)
This function is used in examples 1 and 20.
Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot over its long history.
PLplot documentation at http://plplot.org/documentation.php.