The absolute pitch of each line of a non-percussive staff is indicated by the placement of a clef symbol at the appropriate vertical position on the left - hand side of the staff (possibly modified by conventions for specific instruments). For example, the treble clef, also known as the G clef, is placed on the second line (counting upwards), fixing that line as the pitch first G above ' middle C '.
the name of the staff used for higher pitches
the treble clef, also known as the G clef