This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Ordered grammar.svg Hasse diagram of poset of orderedgrammar production rules own Augur talk created this work entirely by myself February UTC Augur talk Augur Original upload log en Dharmadhyaksha CommonsHelper en Orderedgrammar svg Augur bytes no Hasse diagram of poset of orderedgrammar production rules created this