Has anyone tried using Mantis to manage their system requirements? Storing them in Mantis would be more useful than a text document to be able to track their history, track change requests, and link bugs with requirements. Maybe a wiki is better for that. Use a wiki with comments capability too. Then you can see who requested what. Every so often, an authorized user can modify the specification to include the comments as appropriate.
I didn't find the right solution from the internet.