pilotmoon/PopClip-Extensions — pull request #534 by penlong (2014-09-19 16:37:10+00:00)
Title: add PDF Underline extension

extension for underlining PDFs in Preview and Skim. (While it might make sense to integration it with the current `Highlight` extension, it's likely that some people who use one form of annotation don't use the other, or they might use both. That makes integration difficult.)