Comment by duskwuff

It got better when tools like ObiWan came out to do basic lookups from your computer, along the lines of "what book and page is this function documented on?".

("But couldn't you just jump to the definition in your IDE?" Oh, you sweet summer child. First of all, most IDEs didn't have that functionality. Second, the header files didn't contain documentation. If you were lucky, they might have the argument names.)