Sure! I´m talking about the same feature that has been addressed in a topic earlier and Susan has explained it there nicely: http://forum.valentina-project.org/t/making-markers-in-valentina/645/13?u=elena
A Marker is an arrangement of the pattern pieces as they will be cut on fabric. The Marker is as wide as the fabric, and the grainline of pattern pieces follow the grainline of the fabric. It is several steps more complex than the current Layout function in Valentina. We plan to implement this in the future.
Basically, its an “advanced” layout of pattern pieces in all sizes that are planned to be produced, arranged for the optimal cutting of a fabric (usually several layers at once). It has specific size (length x width) corresponding to the fabric width, print (if exists) and grainline, and also to the length of the cutting table of a production facility.
Something like this:
In case anyone would like more information on it, here is some good and detailed explanation about it, for example: What is a marker? – Fashion-Incubator