[mkgmap-dev] expression test !=

Moin, in the Wiki the != test is described as follows: highway!=motorway This will be true when the highway tag exists, but it does NOT have the value motorway.

From my understanding this should read like

highway!=motorway This will be true when the highway tag exists, but it does NOT have the value motorway, or when there is no highway tag at all. Shall I correct the description in the Wiki or must I correct my understanding of the != test? Gruss Torsten