- o -

• obufstream() : obufstream
• ofstream() : ofstream
• open() : fstream , ifstream , ofstream , SdBaseFile , SdFat
• openNext() : SdBaseFile
• openNextFile() : File
• openRoot() : SdBaseFile
• operator bool() : File
• operator const void *() : ios
• operator!() : ios
• operator<<() : ostream
• operator>>() : istream