man pages section 3: Basic Library Functions
    
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 offsetof - offset of structure member ( Index Term Link )
 
 open a shared object - dlopen ( Index Term Link )
 
 open a stream - fopen ( Index Term Link )
 
 open a stream - freopen ( Index Term Link )
 
 open directory - opendir ( Index Term Link )
 
 opendir - open directory ( Index Term Link )
 
 openlog - control system log ( Index Term Link )
 
 output conversion, wsprintf - convert to wchar_t string ( Index Term Link )
 
 output conversion, formatted
  - fprintf ( Index Term Link )
  - printf ( Index Term Link )
  - sprintf ( Index Term Link )
  - vfprintf ( Index Term Link )
  - vprintf ( Index Term Link )
  - vsprintf ( Index Term Link )