create (string name)

or (as of Quest 5.3)

create (string name, string type)

Creates an object with the specified name. You can subsequently access the object using the GetObject function, or just use its name directly in an expression.

If you specify a type, the object created will be of that type. The command only accepts one type name - if you want the new object to inherit multiple types, you could create one type which inherits all of those types, and specify that here.