Sentence:  It has two extra options using extended syntax. CAT - an extended <WSD>catalogue</WSD> but not as detailed as some I've seen. ( The reason that the Spectrum CAT command is restricted is that it cleverly uses the 512 bytes data buffer of the microdrive channel to sort the filenames - hence the limit of 50 ten-character filenames ) 
Meaning of the word marked with <WSD> tags:  A directory listing.