## Markers

The **Markers** tool allows you to place up to four reference points on the chart for rapid assessment of distance (DIST), bearing (BRG), and reverse bearing (Rev BRG) to selected reference points.

| Menu path |
|-------------|
| {{ menu }} → {{ menu_markers }} |

### Tool activation

The tool is available from the tool selection menu or through the main menu. Marker placement and editing operations become available on the chart.

![Markers window](images/markers-overview.png)

### Marker interface elements

| № | Element | Description |
|---|---------|----------|
| **1** | **Own ship symbol** | Current position of own ship on the chart; used as the base for DIST/BRG/Rev BRG calculation |
| **2** | **Marker** ![Marker](images/marker-icon.png) | A point placed on the chart. The marker is connected to the ship symbol by a line |
| **3** | **DIST/BRG/Rev BRG values** | Calculated parameters for the current marker:<br><br>- DIST — distance<br>- BRG — bearing<br>- Rev BRG — reverse bearing |
| **4** | **Bearing line** | Graphical line from the vessel to the marker for visualizing the direction |
| **5** | **Set** | Adds a marker to the list and to the chart. The marker coordinates correspond to the center of the chart window |
| **6** | **Marker symbol in table** | Marker designation in the table portion of the markers window |
| **7** | **Parameter values (table)** | Non-editable Distance, Bearing, Rev Bearing values for the marker |
| **8** | **Marker coordinates (Lat/Lon)** | Editable latitude and longitude fields of the marker. Can be adjusted after placement |
| **9** | **Positioning** | Centers the chart on the selected marker coordinates |
| **10** | **Delete** | Deletes the selected marker. If no marker is selected, the button is unavailable. Deletion is also available via the hardware Delete key |

```{important}
The maximum number of markers is **4**.
```

### Methods for placing markers

- **Tabular method**: press **Set**, adjust the coordinates in the **Latitude/Longitude** fields if necessary, press Enter to confirm
- **Using the mouse**: left-click at the desired location on the chart (coordinates can be adjusted in the table)
- **Using a touchscreen**: touch the desired point on the chart and adjust the coordinates if necessary

```{note}
After saving and closing the **Markers** window, markers remain on the chart and their positions are fixed.
```
