I created a document with a single graphic and 2 simple tables on a single
page, the only font is arial the size was 178kb.

I have just added two more columns making 4 and a little more text, I then
saved it as a template. The file size has jumped to 4.1mb?? and all resulting
documents based on this template are also huge at 4.1mb.

Please help I don't understand how this could happen!

Many thanks
Tim