## Drop-down Lists

**Drop-down lists** are used to select a predefined parameter value. For example, the vessel's navigational status.

![Drop-down list](images/image122.png)

### Working with drop-down lists

#### Invoking the list
**Left-click** (single tap) on the input field to expand the list.

#### Selecting a value
1. **Select** the required item from the value list
2. **Left-click** (single tap) — select the value

### Manual value entry

Some drop-down lists support **manual value entry**:

- **Entry is performed** using the keyboard
- **Input method** is similar to working with a text field
- Allows **entering user-defined values**, for example a chart display preset name

```{tip}
Drop-down lists with manual entry capability combine the convenience of quick selection from ready-made options with the flexibility of custom input.
```
