It doesn't seem too difficult. Click on "Go Advanced" (next to "Quick Reply") at the bottom, then click on "Manage Attachments" at the bottom. There is a maximum file size but it's sufficiently generous for a small table. I attached a random picture from a visit to a power plant (the water chemistry lab, of all places...). A PDF document would be best. Putting it on the Autopilot web site would be even better.
Thanks!
30'x16' (irregular) indoor gunite/plaster pool, 10k gal,
Autopilot DLG-220 with SC-48 cell, 3/4 HP recirc pump,
solar panels, heat exchanger from 200 kBTU/hour Viessmann boiler
Bookmarks