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//text layer
LAYER M1TXT ...
......
LVS GROUND NAME "VSS" "SAVSS?" "?gnd?" "?GND?" "?VSS?" "?vss?"
LVS POWER NAME "VDD" "SAVDD?" "?VDD?" "?VCC?" "?vcc?" "?vdd?"
M1_text_exclude_power {@label without a path to power or ground
label_text = EXPAND TEXT "?" M1TXT BY 0.2
no_vdd = M1 NOT NET LVS_POWER_NAME
no_gnd = M1 NOT NET LVS_GROUND_NAME
INTERACT label_text ( AND no_vdd no_gnd) ...