Pain compliance as opposed to mechanical compliance. Its a way to control the movements of another person. Pain compliance uses a hold or a technique generally that applies pain (duh!), mechanical techniques restrict motions of limbs and joints. It can actually be a bit more dangerous for the user (though probably not a much with a taser) than mechanical, since with those the recipient will generally need to break their own joint or limb to power through it. But mechanical compliance is more dangerous for the recipient (maybe on par with using a Taser though) since misapplication of force can damage the recipient.

I'm not sure you get why people use pdfs. Its so that there is a consistent PRINT of the document. Plain text doesn't guarantee anything for the print (and if it did it wouldn't be plain text now would it.) In addition, you can't include graphics and logos on your forms and no ASCII art isn't good enough.