OP here. The salary question is a field that requires a number, so I can't put negotiable. It asks the starting and ending salary for each position I've held, starting with the most current and going backward. I don't want to give any salary details - current or historic - as it compromises my ability to negotiate a salary should I be lucky enough to get that far. It can also be a way to screen me out and not get past the first round.
So the question is what would you enter on the form? I was thinking of putting something like $1 or $100 so I can move forward on the form but it's also clear it's not an actual salary.