# Welcome

The best way to get familiar with the capabilities of the OSDM is by looking at the examples.

## Mapping

To find out about mapping, open the Maps item, the Examples directory, and open one of the maps. Then press the "Test Run" button on the toolbar to run the map. This will show you the result of the mapping using a test input document.

Select an element from the output side of the map and note the expression (shown at the bottom) that shows how the element is mapped.

## Structures

As maps depend on structures, you can select any element in a map, right-click, and choose "Go To Structure Element". This will open the structure where you see the characteristics of the element.