Auburngirl

Hi all, I'm tentatively starting out on the job market (to go full fledged in the fall, when I complete) and it seems with every application I'm asked to indicate whether I belong to several specific groups (usually whether I'm female, aboriginal, visible minority or whether I consider myself disabled). In some cases there are guaranteed interviews for those meeting minimum criteria who are have disabilities. The disability category seems to be open and self-defined. The deal is I have a mental illness. I'm generally not particularly inclined to disclose this when looking for a job. I may, however, once I get a job occasionally need some accommodation and/or access to services. There's nothing obvious on my grad school or employment record, other than I would have been faster and likely gotten more done had I not gotten sick. If I click 'no' now am I held to that? Is there any disadvantage to leaving it blank or choosing the 'prefer not to indicate' box where there is one? At what point and how does one disclose (or do you not)? Is it foolish not to indicate belonging to this category at the outset? (particularly when my disability is not obvious and I don't particularly want to discuss it)?