How do I limit task tags to current project in Eclipse?

Eclipse currently shows the task tags (// TODO) from all open projects. I would be grateful if anyone could point out the preference, where I could restrict the scope of tasks displayed (e.g. only tasks from current project).

In Eclipse Helios (3.6) you can configure the scope.

Down arrow at the top right -> Configure Contents:

Select a configuration on the left (or create a new one) and on the right in the Scope section select "On any element in same project".

There should be a down arrow in the top-right with several options in it. For the old Eclipse the option you want is Filters... And for the newer Eclipse the option is now Configure Contents. At the top of the Configure Contents dialog is a scope selection with options you want, I think.. If not check preferences and search for tasks, or scope. It should be in there somewhere.

Close projects that you aren't working on. Tasks show for any part of the workspace, so remove projects that you arent working on by doing a close operation. (right click on the project in the project explorer and then "close project")