Scid PGN analysis using Stockfish Scid outputs this analysis of a PGN file using the Stockfish engine:



What does the D mean? And where (e.g. a web page) is this actually explained?
This is a special mark meaning diagram. When you export the game into a PDF/LaTeX file positions after moves marked with D are rendered in the document.

The only documentation I've found is https://sourceforge.net/p/scid/wiki/HowToExportGames/. Scid vs PC documentation maybe is clearer http://scidvspc.sourceforge.net/doc/Export.htm. But documentation is actually poor, I discovered this feature just testing the Export to LaTeX feature.