If you ask an author to sign a book, you have to tell him/her what to write
If you happen to catch me, say by stopping by my office if you happen to work at Microsoft, I'd be happy to sign your copy of my book. (There's no need to set up a formal book signing appearance in building 9; just stop by my office any time.) One of the things you don't realize as a fan waiting in line at a book signing is that when you get...