What do M, D and L5 mean at the end of a line in an Amadeus Itinerary Element description?

In amadeus system when adding an itinerary element I get the following response:

EK 530 B 21JAN 1*DXBCOK DK1  0245 0805  21JAN  E  0 772 M
9W 312 T 30NOV 7 DELBOM DK4  2100 2305  30NOV  E  0 73H D

SR 192 C 15MAY 1 ZRHBOM HK1     A  1210 2355   M11   0 L5
QF 141 Y 19MAY 1 BNEAKL HK1     I  0645 0810   763   0 B

I understand all the tokens in the above response(for first two lines):

airline
flight #
class
dep date
day of week
sector
status
dep time
arrival time
arrival date
ticket type
# stops
equipment

Except the last characters M on first line and D on the second line and L5 on the third. What do they stand for?

Also on the last two lines what does A and I mean, i.e the letters mentioned after the status HK1. (edit: Got the answer, these are terminals.)

terminology gds

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What is Amadeus Itinerary?

Your travel app bringing you all the. travel info you need in one place. Smart travel itinerary, flight status, alerts and travel services to get. you smoothly from door to door.

How do I use fxd command in Amadeus?

To beat PNR price while creating the best customer experience, enter: FXD to search for cheaper recommendations with current PNR itinerary or, FXD//D3 to search for recommendations 3 days later. The first recommendation shows the price to beat, which is the lowest (best) available fare for the current PNR journey.

How do I add ARNK to Amadeus?

An ARNK should only be entered between flight segments or at the beginning of the itinerary.

Display the PNR and check for an ARNK segment at the end of the itinerary, or 2 consecutive ARNK segments.

Remove the ARNK at the end of the itinerary, or one of the 2 consecutive ARNK.

Amadeus Training Scenario: Book Flight Itinerary, Create PNR, Price Fare

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Images: Will Mu, Ave Calvar Martinez, Monstera, Skylar Kang