.3DL File Extension

High-quality textured 3D model format used by LightConverse, a 3D lighting visualization and control software program; represents a three-dimensional scene optimized for realtime rendering with multiple light sources; contains mesh data, material attributes, and bitmap references.

GPS data file used by the iGO navigation software; contains points of interest, called landmarks; includes the location and associated metadata; saved to the \iGO\content\building\ directory of the navigation device's storage card.

3DL files are usually saved alongside a .3DC building file.

CAD file created by Sierra LandDesigner 3D, an older software used for generating garden and landscaping designs; may include layouts for various kinds of plants, trees, flowers, vegetables, groundcovers, and hardscapes; can be navigated as a 3D walkthrough in the software.

Several 3DL files are included with the LandDesigner 3D software and provide templates for landscape planning.

NOTE: Sierra LandDesigner was last released for Windows 95/98 and has since been discontinued.