The use of type flag when finding items matching certain criteria

[LJX0006]

According to the user guide, "If none of the type switches are used, all types of objects will be listed. If at least one of them is listed, only objects whose type is used as a switch will be listed." But with the type flag "-im" indicatin g the impression, the result still contains all the types. Or maybe it is not clearly stated in the user guide that only the left bottom one will be specified by the type flag.