Mac Abbreviations and Acronyms
- OSObservation Software
- OSOhd-School
- OSOldsstyle
- OSOn-Screen
- OSOnlj Show
- OSOnly Sourcn
- OSOn Sale
- OSOn Station
- OSOn Such
- OSOpen The System
- OSOperation Not Supported
- OSOptimization Section
- OSOption Select
- OSOriginal Sleeve
- OSOther Soliy
- OSOur Sponsors
- OSOrder of Service
- OSöNerilen Sistem
- OSAXOpen Scripting Architecture Extension
- OSPObecné Studijní PřEdpoklady
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