There should be an option to show the rendered documentation regardless of if the caret is actually in the doc comment. For example, if in a method that has doc, it should show the method's documentation.

This may be a complementary option to issue #6 - the ability to 'pin' the documentation.

Note that one of the reasons the documentation isn't rendered unless the caret is in the comment is performance. If the enhancement gets added, the default value for the option should be off.