I just wanted to take a DXF file containing a lot of different types of paths/lines in and extract all contour related lines. In OCAD, there was an option in the way of "Select all with current symbol", but there doesn't seam to be a way to do that in Mapper right now.
Apart from some basic functions like that (Select all with current, Select with with other etc.) some sort of query would perhaps be nice? You could for example type something like "select paths with symbol contour_1 within 10 points of areas with colour red" (should explain itself). This is probably a bit big and perhaps not really used or needed but might still be interesting.
I'm a bit stuck right now with the QML part, so I might look into this
Maybe this has something in common with [tickets:#178].
Related
Tickets (Archive):
#178The feature "Select all objects with this symbol" already exists in the context menu of the symbol settings dialog.
Missing an option to select unmapped objects