Nick,
Self explanatory question as per above. I'm seeing something similar on my wing plan view with no other confirming detail. I was under the impression that this would be done with individual pins for each pin joint.
Awaiting potential acquisition of my missing wing root details for the Baby, so maybe wont have to extrapolate from the Pup.
These images of the Snipe are spectacular, they look like a period sales brochure, or advertisement in the equivalent of a 1918 version of Aerospace Weekly!