pdf;dr - when you avoid clicking a link because it's a PDF.
based on tl;dr. similar: tos;dr.
"pdf;dr" is ungoogleable. Earlier references welcome.
"-;dr" is becoming a suffix according to @snarfed_org who also pointed out tos;dr, e.g. http://tosdr.org/
http://indiewebcamp.com/irc/2013-11-01#t1383341023
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