Survex excludes Walls shots from network with variance of (*) or (x,?)

[Joe Walko]

Docs indicate line of Walls shot data floated via (*), or floated vertically via (x,?) should should be treated as 'nosurvey', yet still part of the network (unless I'm misinterpreting the documentation).

Instead, Survex excludes affected stations from network, and issues warning: as: cavern: warning: Survey not all connected to control points The following survey stations are not attached to a control point:

Behavior is sometimes inconsistent, and non-obvious: A downstream float tie can cause the above error for a station several hops removed from the (*).

[Joe Walko]

Three sets of Walls test data, Walls coordinate lst, and cavern logs