| File Extension: | RRI |
| File Type Description: | SPEFO Stellar Spectra Analysis Data |
| File Type Developer: | Astronomical Institute of the Czech Academyof Sciences |
| Primary Associated Software: | SPEFO |
| Primary Software Developer: | Astronomical Institute of the Czech Academyof Sciences |
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SPEFO Stellar Spectra Analysis Data files were originally developed by RealWorld Graphics for the RealWorld Cursor Editor software application. Internal website statistics show that RRI files are most popular with users in United States and those running the Windows 10 operating system. Frequently these users are visiting our web site using Google Chrome.
 | RealWorld Icon Editor by RealWorld Graphics |
 | SPEFO by Astronomical Institute of the Czech Academyof Sciences |
 | RealWorld Cursor Editor by RealWorld Graphics |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | DOS |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .RFI | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data |
| .RV | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data |
| .RAI | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Data |
| .EQW | Petr Skoda | Data Files | SPEFO Stellar Spectra Analysis File |
| .LST | Unknown Developer | Text Files | Data List |
| .HO | Open Source | Data Files | Knowledge Explorer Knowledge Representation Hierarchy Outline |
| .Y04 | Corel Corporation | Data Files | Corel Paradox Secondary Index |
| .CPQ | Compaq | System Files | Compaq OEM Disc Configuration File |
| .VIS | Microsoft Corporation | Game Files | Visibility Image File |
| .LDP | Kevin Yau | Data Files | Lingoes Dictionary File |
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