Usually I use modules to have the same drawing at different scales in different plans and with different dimensions without enlarge the number of layers (dimensions50, dimensions100 and so on). So, in a drawing that represents an apartment at scale 1/50 I have a layer combination set that allows me to copy only the parts of the drawing that I want and save as Clipboard Module.
This module is hotlinked in a general plan in a different scale (let's say 1/100) and is dimensioned in this scale. Thus I can have both drawings opened at a time (with different AC copies, of course) and work on the 1/50 and I only update the module when I want (significant changes), copying again and replacing the file.
The dimensions placed in the 1/100 drawing does'nt disappear and, if there are changes on the walls, are adapted to these changes. Sometimes we lose some dimension, but I think that it's a human mistake (deleting a wall and drawing it again changes the internal ID)
This method works well for us, although it needs a good previous planning. It's a workaround that allows to reduce the size or the extensions of the modules. If we use PLN to hotlink there are many things that we don't want to be part of the drawing where we place the module.
In AC81 it would be great if we were able to hotlink to a defined view on another file, like we do with PlotMaker. It would be great too to be able to 'fence' a module in ArchiCAD with a polygonal contour to hide undesired parts that are in the module (like we do with a placed drawings in PlotMaker)
Miquel
Capella & Garcia Arquitectura
AC18 - AC21, iMac 27" 3.1 Ghz Intel Core i7, 16GB Ram, OSX 10.13.1