To make hyperlinks to theorems in plaintex one can use commands that are available in a file called Hyperbasics. When running pdftex instead of tex on the file, Miktex ignores some of the special commands of Hyperbasics. This leads to the question in the title.
closed as unclear what you're asking by Bobyandbob, Stefan Pinnow, Troy, Phelype Oleinik, Milo Sep 4 '18 at 15:52
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