@wtfpdf@kmur Yes, these are great: densely packed with all kinds of reference info - including lots of tables on specific things that I'm only barely starting to learn about (!). Kudos to Peter and the PDF Association.
I did notice with some disappointment that the sheets themselves are not PDF/UA compliant, which means that they aren't fully accessible to all users. Hopefully that is something they can fix in a revision. 😬 #PDFUA#PDFAssociation#PDF#Accessibility