Changes

Sven Schwyn · 6efd5263
--- a/Navigational-aid.md
+++ b/Navigational-aid.md
-:warning: This part of the documentation is not complete yet and may contain errors.
-
 #### Table of Contents

 [<u>`Dpn`</u> Designated point](#dpn-designated-point)<br>
@@ -31,10 +29,10 @@ Designated points are well defined and named positions on the map.
 </Dpn>
 ```

-* `Dpn` – Designated point
+* <u>`Dpn`</u> – Designated point
  * `@region` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – [Region](Identifiers#region) the designated point belongs to
  * `@source` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – Reference to [source of data](Identifiers#source)
-* `DpnUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – `Dpn` identifier
+* `DpnUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – <u>`Dpn`</u> identifier
  * `codeId` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Coded identification (e.g. five-letter ICAO name)
  * `geoLat` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location latitude 
  * `geoLong` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location longitude
@@ -69,10 +67,10 @@ Designated points are well defined and named positions on the map.
 </Dme>
 ```

-* `Dme` – DME
+* <u>`Dme`</u> – DME
  * `@region` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – [Region](Identifiers#region) the DME belongs to
  * `@source` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – Reference to [source of data](Identifiers#source)
-* `DmeUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – `Dme` identifier
+* `DmeUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – <u>`Dme`</u> identifier
  * `codeId` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Coded identification
  * `geoLat` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location latitude 
  * `geoLong` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location longitude
@@ -90,8 +88,60 @@ Designated points are well defined and named positions on the map.
 [Marker beacons](https://en.wikipedia.org/wiki/Marker_beacon]) operate on 75 MHz.

 ```xml
+<Mkr region="EB" source="AD|2.19|4|51">
+  <MkrUid>
+    <codeId>--</codeId>
+    <geoLat>51.16727778N</geoLat>
+    <geoLong>004.56630556E</geoLong>
+  </MkrUid>
+  <OrgUid>
+    <txtName>BELGOCONTROL</txtName>
+  </OrgUid>
+  <IlsUid>
+    <RdnUid>
+      <RwyUid>
+        <AhpUid>
+          <codeId>EBAW</codeId>
+        </AhpUid>
+        <txtDesig>11/29</txtDesig>
+      </RwyUid>
+      <txtDesig>29</txtDesig>
+    </RdnUid>
+  </IlsUid>
+  <codePsnIls>O</codePsnIls>
+  <valFreq>75</valFreq>
+  <uomFreq>MHZ</uomFreq>
+  <txtName>ANTWERP MARKER BEACON</txtName>
+  <codeDatum>WGE</codeDatum>
+  <valElev>39</valElev>
+  <uomDistVer>FT</uomDistVer>
+  <Mtt>
+    <codeWorkHr>H24</codeWorkHr>
+  </Mtt>
+  <txtRmk>3.73 NM FM THR 29</txtRmk>
+</Mkr>
 ```

+* <u>`Mkr`</u> – Marker beacon
+  * `@region` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – [Region](Identifiers#region) the marker beacon belongs to
+  * `@source` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – Reference to [source of data](Identifiers#source)
+* `MkrUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – <u>`Mkr`</u> identifier
+  * `codeId` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Coded identification
+  * `geoLat` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location latitude 
+  * `geoLong` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location longitude
+* `OrgUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Association to <u>`Org`</u> organisation
+* `IlsUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Reference to ILS
+  * `RdnUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Association to <u>`Rdn`</u> runway direction
+* `codePsnIls` – Position of the ILS: `O` (outer), `M` (middle), `I` (inner), `C` (backcourse) *or* `OTHER` (see remarks)
+* `valFreq` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Frequency: always `75`
+* `uomFreq` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Unit of `valFreq`: always `MHZ`
+* `txtName` – Full name
+* `codeDatum` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Always `WGE` (WGS-84)
+* `valElev` – Elevation
+* `uomDistVer` – Unit of `valElev`: FT (feet) or M (meters)
+* `Mtt` – [[Timetable]]
+* `txtRmk` ![[MD]](https://openflightmaps.github.io/ofmx/svg/md.svg) – Remarks
+
 ## <u>`Ndb`</u> NDB

 [NDB (non-directional beacon)](https://en.wikipedia.org/wiki/Non-directional_beacon) operate in the frequency band between 190 kHz and 1750 kHz.
@@ -119,10 +169,10 @@ Designated points are well defined and named positions on the map.
 </Ndb>
 ```

-* `Ndb` – NDB
+* <u>`Ndb`</u> – NDB
  * `@region` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – [Region](Identifiers#region) the NDB belongs to
  * `@source` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – Reference to [source of data](Identifiers#source)
-* `NdbUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – `Ndb` identifier
+* `NdbUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – <u>`Ndb`</u> identifier
  * `codeId` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Coded identification
  * `geoLat` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location latitude 
  * `geoLong` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location longitude
@@ -162,10 +212,10 @@ Designated points are well defined and named positions on the map.
 </Tcn>
 ```

-* `Tcn` – TACAN
+* <u>`Tcn`</u> – TACAN
  * `@region` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – [Region](Identifiers#region) the TACAN belongs to
  * `@source` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – Reference to [source of data](Identifiers#source)
-* `TcnUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – `Tcn` identifier
+* `TcnUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – <u>`Tcn`</u> identifier
  * `codeId` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Coded identification
  * `geoLat` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location latitude 
  * `geoLong` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location longitude
@@ -210,10 +260,10 @@ Designated points are well defined and named positions on the map.
 </Vor>
 ```

-* `Vor` – VOR
+* <u>`Vor`</u> – VOR
  * `@region` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – [Region](Identifiers#region) the VOR belongs to
  * `@source` ![[X]](https://openflightmaps.github.io/ofmx/svg/x.svg) – Reference to [source of data](Identifiers#source)
-* `VorUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – `Vor` identifier
+* `VorUid` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – <u>`Vor`</u> identifier
  * `codeId` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Coded identification
  * `geoLat` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location latitude 
  * `geoLong` ![[M]](https://openflightmaps.github.io/ofmx/svg/m.svg) – Location longitude