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CUS File - What is a .cus file and how do I open it?
Learn about .CUS files and view a list of programs that open them.
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Overview
What is a CUS file? Dictionary file used by AutoCAD, a CAD application used for architectural design and documentation; contains a list of words separated by line breaks in a plain text format; allows users to store a list of spelling exceptions so that the AutoCAD spell checker does not report errors for certain words; commonly contains company names or business acronyms.
More Information Since CUS files are saved in an ASCII text format, they can be viewed and modified with a text editor.
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.CUS File Extension
AutoCAD Custom Dictionary File
| Developer | Autodesk |
| Popularity |
3.4 | 5 Votes |
What is a CUS file?
Dictionary file used by AutoCAD, a CAD application used for architectural design and documentation; contains a list of words separated by line breaks in a plain text format; allows users to store a list of spelling exceptions so that the AutoCAD spell checker does not report errors for certain words; commonly contains company names or business acronyms.
More Information
Since CUS files are saved in an ASCII text format, they can be viewed and modified with a text editor.
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Programs that open or reference CUS files
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Windows
Autodesk AutoCAD 2025
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Microsoft Notepad
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Microsoft WordPad
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Category: Settings Files
Updated: September 8, 2010