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Amadeus MDN Command: Move Screen Down by Lines

A complete guide to the MDN command in Amadeus — how to move the screen down by a specific number of lines when working with long displays.

Amadeus displays are often longer than a single screen. Availability lists, schedules, timetables, queue listings, and search results can run past the visible area, and scrolling through them a full page at a time is not always the right approach. The MDN command is the Amadeus entry that gives you precise control over downward movement. It moves the displayed screen down by the number of lines you specify, so you can step through a long display carefully without skipping past a detail you needed to see. This guide explains what MDN does, its syntax, and when it should be used.

What Does the MDN Command Do?

MDN is the Amadeus GDS command used to move the screen down by a specific number of lines.

Category: Screen Navigation.

It moves the displayed screen down by the number of lines specified.

Unlike the standard scroll-down commands — which move the display by a fixed amount — MDN lets you set the number of lines yourself. This is useful when a display is dense with information and you need to advance just a few lines to reach the next relevant entry without skipping it. It is a purely navigational command: it does not retrieve data, run a new search, or modify anything in the PNR.

Syntax & Example

Enter the command where N represents the number of lines to move down:

MDN

Example:

MD5

This moves the screen down 5 lines. The number at the end of the entry determines how many lines are scrolled — a larger number moves further down the display.

When to Use MDN

Use MDN when you need to move down a specific number of lines instead of scrolling by the default amount. Typical scenarios include:

Advancing a few lines to reach the next relevant entry in a long availability list.
Reviewing a dense schedule or timetable line by line.
Stepping through a queue listing or long report carefully.
Checking details just below the current position before selling a segment.
Reading extended flight information that runs past the bottom of the screen.
Comparing entries in the same display that are several lines apart.
Navigating long displays when a full-page scroll would move too far.

How MDN Fits Into Your PNR Management Workflow

A typical session using MDN might look like this:

Open a long availability display with AN or a schedule with SN.
Review the flights shown at the top of the display.
Enter MD5 to move the screen down 5 lines and continue reviewing.
Read the next entries and confirm the information.
Continue reviewing the display and choose the option that fits the customer.
Sell the segment with SS.
If you need to move back up, use MUN; if the screen has been cleared, use MP.

How MDN Relates to Other Screen Navigation Commands

MDN → moves the screen down by a specific number of lines.
MUN → moves the screen up by a specific number of lines.
MD → moves the screen down by the default amount.
MU → moves the screen up by the default amount.
MP → redisplays a screen that has been cleared.
ACR → redisplays availability for the same or a different date.
AN → opens a new availability request.
RT → retrieves a live PNR from the active database.

The distinction matters: MDN scrolls the display down by the number of lines you specify; MUN scrolls it up by a specified number; MP restores a screen that has been cleared. Use MDN and MUN for controlled scrolling within the current display, and MP when the display has been replaced and you want it back.

Important: MDN is purely a screen-navigation command. It does not re-run a search, re-retrieve a PNR, or modify the data on display — it simply moves the visible area down by the number of lines you specify.

If the display has been replaced by another request — for example a new availability search or a PNR retrieval — MDN will scroll within the current screen, not the previous one. Re-enter the original request if you need to bring back that data.

Frequently Asked Questions

What does the MDN command do in Amadeus?

MDN moves the displayed screen down by the number of lines you specify. The N represents the number of lines.

What does MD5 mean?

It moves the screen down 5 lines. Use a higher number to move further down the display.

Does MDN re-run the search or change the data?

No. MDN is a screen navigation command only. It moves the visible area within the current display without retrieving new data or modifying anything.

How is MDN different from MUN?

MUN moves the screen up by a specific number of lines; MDN moves it down by a specific number of lines.

How is MDN different from MP?

MP restores a screen that has been cleared. MDN moves the current screen down by a specific number of lines.

Conclusion

The MDN command is the precise scroll-down tool in Amadeus. Use MD5 or a similar entry to move the screen down by the number of lines you specify, giving you control over how far you advance through a long display. It is a small but useful navigation command for reviewing availability, schedules, timetables, queue listings, and long reports line by line — without skipping past a detail you needed to see. Remember that MDN scrolls only; it does not retrieve data or modify anything, and it works within the current screen. If the display has been cleared, use MP to bring it back, and if the data has been replaced by another request, re-enter the original entry — for example AN for availability, RT for a PNR, or SN for a schedule. Paired with MUN for scrolling up, MP for restoring cleared screens, and ACR for redisplaying availability, MDN completes your screen navigation toolkit and keeps your workflow smooth when working with long displays.