pln is: Pln is a file extension of Archicad File or indesign plugin. It can be opened by Graphisoft ArchiCAD.
It is an architectural project file that is drawed with Archicad. It may be opened by convenient version of Archicad. Architects can create easier and more practical drawings with this software. In comprasion to Autocad it provides less recilience. However it provides great advantages with its Bim structure and ease of use features. You are able to draw projects easier with this format.
In the small chance this file might be a Plugin that is used for Adobe Indesign.
Pln File format viewers or openers
Graphisoft ArchiCAD, Adobe InDesign
Pln File reklated links.