I searched, but could find no help on using the forum, or guidance on reporting bugs.
My reason for looking was that I had typed some tags without comma separators, e.g. "OpenType PDF" and noticed that only threads with both words were being found.
One has to type it as "OpenType, PDF" to get both tags to show up. The Topic Tag field does say this before you start typing anything, but I missed it.
If there is not already a FAQ somewhere on using this forum, perhaps someone from Serif should write a sticky thread explaining how to write a perfect bug report?