Android follows normal java package conventions plus here is an important snippet of text to read (this is important regarding the wide use of xml files while developing on android).he concept comes from Package Naming Conventions in Java, more about which can be read here:*. http://en.wikipedia.org/wiki/Java_package#Package_naming_conventions. Source: http://www.quora.com/Why-do-a-majority-of-Android-package-names-begin-with-com.
Files that contain the .3ds file extension are most commonly associated with the Autodesk 3D Studio software.he 3DS files that are used by the software contain a variety of information used to form a three dimensional scene, like coordinates, list of polygons used to form the objects, color information etc.
FreeCAD is a free and open-source application that can work with the DWG files by utilizing the proprietary Teigha file converter for .dwg and .dxf files from the Open Design Alliance. LibreCAD is a free and open-source 2D CAD application that can open DWG & DXF files using your own library. Teigha Viewer is a freeware stand-alone viewer for .dwg and .dgn files built on the Teigha development platform from the Open Design Alliance. It runs on Windows, Linux, MacOS and Android operating systems.