+1
BTW such sketcher offset tool already exists as a macro coded by @edi :
https://forum.freecadweb.org/viewtopic. ... 50#p460178
Generaly speaking, a chain select tool is very useful in CAD, that's obvious. The more versatil, the better.
Actually this tool already exists in FC:
Path_SelectLoop
That would be great just to make this tool works in sketcher mode.
I have no idea if it's a tought nut to crack or not.