| File Extension: | XPN |
| File Type Description: | Quest Saved Explain Plan |
| File Type Developer: | Quest Software |
| Primary Associated Software: | Unknown Software |
| Primary Software Developer: | Unknown Developer |
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Release of the Unknown Software software program prompted the development of the Quest Saved Explain Plan file type by Unknown Developer. Commonly, Quest Saved Explain Plan files are found on user computers from China, and on PCs running the Windows 10 operating system. Google Chrome is the predominant internet browser used by this population.
 | Unknown Software by Unknown Developer |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .SPARSE | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .NOC | Unknown Developer | Uncommon Files | Unknown File Type |
| .MP4S | Unknown Developer | Uncommon Files | Unknown File Type |
| .ADRESSES | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .HNM | Cryo Interactive Entertainment | Video Files | Cryo HNM Movie Soundtrack |
| .0.264 | Unknown Developer | Uncommon Files | Unknown File Type |
| .MFO | Perl Express Group | Data Files | Perl ModInfo Descriptor File |
| .TDR | PO KSI | Backup Files | ArVid Tape Backup |
| .STACK | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .RTV | NewTek | Video Files | NewTek Uncompressed Video Data |
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