Type in a command, or "ls dictionary" to search all commands for "dictionary", etc.

man ApexRapidLightweightPortableMobilityScooter

No manual entry for ApexRapidLightweightPortableMobilityScooter.
To search for "ApexRapidLightweightPortableMobilityScooter", try typing ls ApexRapidLightweightPortableMobilityScooter.