There is no relationship between 'Stored Document Size' and 'Item Rich Text' in the File | Properties dialog, nor any reason to expect one to be larger or smaller than the other.
Stored Document Size is the total size of any documents stored in the .urd file (PDF files, stored web pages, Word documents, etc.).
Item Rich Text is the total size of any rich text in the .urd file (from non-document items [i.e., Text, Task, Contact, etc.] and Item Notes).
And both documents and rich text are stored compressed in the .urd file.
These numbers don't include space used to index keywords in documents (whether stored or linked) or rich text. If linked documents are keyworded by UR, that can add to the size of the .urd file (and make searches much quicker -- there is always a tradeoff between size and speed).
You could use SQLite to delete all auto-generated keywords from a database:
http://www.kinook.com/Forum/showthre...?threadid=2825 (and then compact the database).