# Viewing 12da roads in the map

The horizontal alignment in a 12da file is shown in the map as a red line.

If the road is not shown in the map, tap to open the Layer manager and select the Map files tab. Select the file and then make the appropriate layer(s) visible and selectable. The file must be in the current project folder.

In the map, tap an alignment to select it. The selected alignment is shown as a blue line.

When you select a road, the Review, Edit, and Stakeout softkeys appear, enabling you to review or edit the road definition, or to stake out the road.

To show or hide roads or other linked files in the map, tap to open the Layer manager and select the Map files tab. Tap a file to make it visible or to hide it. This is useful for reviewing a road relative to related secondary roads, particularly at interchanges and intersections.