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.ASC File Extension


File Type 1 ASCII Text File  (Most common)
File Format File
Common? No
File Description Plain text file in ASCII format
Program(s) that open asc files Mac / Windows: Any text editor

File Type 2 Autodesk ASCII Export File
File Format Proprietary File
Common? No
File Description Text file containing geometric shapes and points information; exported by various Autodesk programs; saves data in a text format, which is more compatible with other programs.
Program(s) that open asc files Mac: Any text editor
Windows: Autodesk AutoCAD Land Desktop, Survey, or 3ds Max; Any text editor

Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/asc