DirectX Model File
4.2 | 52 Votes
What is an X file?
3D image file used by DirectX technology, which is often used for rendering 3D graphics in games; may contain specifications for meshes, textures, animations, and objects; can be exported using the DirectX SDK plugins for 3ds Max and Maya, or with custom exporters for programs such as Blender and DeleD.
Programs that open or reference X files
Lex Source Code File
3.7 | 16 Votes
Source code written in the Lex programming language (a standard lexical analyzer for Unix); may be processed with the lex utility included with most Unix distributions to generate a C program; the output is often written to a file named "lex.yy.c."
Lex source code files more often use the .L extension.