Member Restraints at Spans
You can define restraint conditions along the length of 1D Members, which can be either be at points or along spans. Points are marked by nodes that lie on the member whereas a span is made up of at least one constituent element along the member.
You can specify the restraint conditions for individual spans if you set the 'All Spans' member restraint option to 'Advanced'.
Spans
Add, Delete, Modify, +, -
Buttons to add, delete, and modify span restraints. Add and Modify invoke the Restraint Definition dialog for spans. As with point restraints, the 'Span' field relates to the index of the span along the member.
The +/- allow the point numbers to be incremented or decremented.