Null (-null) additive

null-null additive

null brush Null

null character Null

null pointer Null

null reference Null

null statement Null

null string Null

null terminator Null

null-terminated character string Null

binary-path or multi-path

Bye-path value (By-path valve)

join-graph of path and path

light path and optical path length control mirror

the unite of path and path graphs P(m)∨P

adaptive null forming

aural null

beam null line

cathode ray null indicator