This means that this SmartMark can only be used in MFG based layouts and the MFG files have to contain station and/or strip numbers generated using ArtiosCAD tool:
The options for this mark are rather straightforward:
the Number tab allows to control the appearance of the numbers (font, etc...)
When Size is set to Auto, the point size of the station/strip numbers in the MFG document is used.
the Numbering tab allows to select what to import: station numbers and/or strip numbers
the Inks tab allows to control the coloring of the resulting text objects - the same controls are used in other SmartMarks