L3DT can open a number of files from the command line. This occurs when:
You double-click on a file that is associated with L3DT (e.g. formats like HFF, PROJ, etc).
You drag a file onto the L3DT desktop icon or executable.
You use a command shell to open a file in L3DT (e.g. 'l3dt.exe myexample.bmp').
The following file types may be opened in this way:
| File type | Extension | What happens? |
| Project file | proj, mgf | L3DT will open the map project. |
| Heightfield files | hff, ter, bt, etc… | L3DT will import the heightfield as a new map project. This works with all 'native' heightfield files. |
| Image files | bmp, png, jpg, etc… | L3DT will import the image as a heightfield in a new map project, but will first ask for import settings. This works with all 'non-native' heightfield formats. If not supported as a heightfield, the image will be loaded as a RGB texture. |
| Script files | zs, py | L3DT will run the script file (using ZeoScript for zs scripts, and cdPython for py scripts, if installed). |
| Map definition | def.xml | L3DT will create a new map based on the map definition. |
| Batch file | run | L3DT will create a set of maps based on the batch run file. |
| Plugin | zeo, dll | L3DT will install the plugin, after first asking you to confirm the action. |
