PIDE turn 13: rename ALL(?) code already handling Position.T from *_TEST to *_POS
Note: after switching all src to Position.T *_POS shall be cut of identifiers.
3 Much documentation is still in theses are found at
4 https://isac.miraheze.org/wiki/Publications_and_Theses#Refereed_Papers
6 In March 2020 formally checked documentation started in