create an ngspice initialization file .spiceinit with the following lines: set ngbehavior=hs set ng_nomodcheck set color0=white set color1=black set xbrushwidth=2
start xschem
a few useful zoom commands and their shortcuts:
Zoom Full | F
Zoom In | Shift + Z
Zoom Out | Ctrl Z
Zoom Box | Z
select the cell test_nmos and hit the key E to descend into its schematic