I have a CS750 which has a fairly good help file which answers a lot of my questions.
I do not have an MD-380 but the commands are very similar and the understanding can be transposed between makes and models..
Connect Systems CS750 and CS800, Hytera PD-365, Motorola DP4600
Raspberry Pi 2 and DV4Mini HotSpot
AOR AR-DV1 Digital Voice Receiver / eSPYonARD
WS1088 / TRX-1 / Whistler Q / UBCD3600XLT