I'm starting to define a set of drawing formats for my company, I just put a nice title block table and populated it with references to the part parameters. There are some parts of the table that are "free", that is they are not linked to a part parameter, for these parts the draftsman can enter the notes he wants. Now, I noticed that the small prints I put in the table (like "drawing number", "Created by" etc) on top of the cells where actual data is, can be edited and deleted in the drawing! Is it possible to somewhat "lock" the table so that no one can change those cells?