It sounds like you are looking for a specific, high-quality version of the Arial font, possibly a "patched" or modified version designed for better compatibility or specific rendering needs (like those indicated by "Panose default").
When downloading fonts, users often look for "extra quality" and "patched" versions to ensure they get a version that has been optimized for use. A patched font refers to a version that has been modified or updated to fix certain issues, such as glyph inconsistencies, spacing problems, or to improve rendering on specific platforms. The term "extra quality" implies a version that offers superior performance, possibly with additional features or enhancements not found in the standard release.
Conclusion
Windows Systems: Arial is a proprietary font owned by Monotype and is pre-installed on all Windows and macOS versions. If it is missing or "disappeared," you can try to restore default font settings in your Control Panel under Font Settings.
Users often search for this exact string when they encounter a "Missing Font" error in software like CorelDRAW. The software may display a dialog box suggesting an "Arial Normal (Western) (PANOSE Default)" substitute because it cannot find the exact original font file used in the document. Where to Find Genuine Arial