With “project” on, Rhino places drawn lines on a plane at zero on the axis perpendicular to an ortho view. If an active section doesn’t encompass that coordinate, the lines are not displayed once drawn.
When an ortho Viewport or Detail has an active section and is aligned to it, and the sectionned volume doesn’t encompass the zero position on the axis perendicular to the view, can Rhino be set to project the lines drawn on a consistent plane within the section?
One way would be to create and activate a different cplane for every section, each with its origin within that section. I"m hoping for something simpler.