rem: virtual string description(void) const { return("Special format acts as a wrapper for other file formats. It can used for looping, audio data relocation and other special tasks."); }
add: virtual std::string description(void) const { return("Special format acts as a wrapper for other file formats. It can used for looping, audio data relocation and other special tasks."); }
context:   virtual string description(void) const { return("Special format acts as a wrapper for other file formats. It can used for looping, audio data relocation and other special tasks."); }