a port of the Processing Visualization Language
Special value used to signify the target is not a valid data element. In Processing, you may run across the keyword
when trying to access data which is not there.
Web & Application
This reference is licensed under the CC BY-NC-SA 2.0 license:
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Quick Start - Processing Developer
Pomax's Guide to processing-js
Open Source @ Seneca
Processing is an open visualization language developed by
. Processing.js is maintained by the Processing.js team.