To generate markers that describe the shape of the developable surface you have to first set the surface type to Developable. This will create ruling lines from the surface edges from which the markers can be generated using the Markers | Generate Markers for Developable Surfaces command. This command is only available if there is at least one surface in the design with the surface type set to developable surface (see Surface Types in Maxsurf on page 80).

Markers are calculated for the surfaces selected in the list on the left of the dialog (only developable surfaces are listed). Markers can be generated where the ruling lines intersect stations previously defined in the Grid Spacing dialog, or at equal intervals along the ruling lines. The number of ruling lines calculated depends on the current surface precision setting, but during the generate markers command the precision is increased temporarily to highest.

Markers generated at equal intervals along the ruling lines – this is useful for the automated surface fitting (Markers | Fit surface to Markers) as it ensures that markers are generated even when the rulings are vertical and do not interest stations.

Markers generated where they intersect the sections. This is useful when manually fitting the surface to the markers in the body plan view.

The Markers generated by this function will be linked to the surface and sections automatically.