A Dap is a term used commonly here in NE (and increasingly elsewhere) meaning the use of a simple notch - a housing like joint, (though always deeper) which serves in some non housing application.
Joe --
Did we cross paths in '02 whaen I demonstrated at Frame at the Weald & Downland, and was hanging about nextdoor with Ken at West Dean College ?
Don --
Yes, Connecting Girt Framing in many iterations was used through to the end of historical timber framing in the area.
I only made mention of the dovetail/CP issue in that it is a common misconception in the community that this is a historical detail.
Looking forward to your pictures.
"We build too many walls and not enough bridges" - Isaac Newton