when notating music for a two-handed instrument (such as the guzheng), it is common for the bar lines of each hand to be drawn separately, but a score bracket to be drawn on the left of the page to "bind" the two hands together. This bracket is not the same as the bracket used on a Western piano staff; it's more like the bracket used to bind an orchestral section together in Western music. Sometimes the final double barline, and any barlines marked with repeat signs, also pass through both hands, but this is not consistent even in the same publication. If a piece of music for a two-handed instrument has a passage where only one hand is notated, lines of numbered notation without score brackets at the left can be used for this passage. Hence a piece of music may shift between two-handed (with bracket) and one-handed (without bracket) layouts during the course of the piece. Cadenza-like passages can have dotted barlines, or barlines can be omitted altogether. It is possible to print a small fermata above a bar line; this represents a brief pause between the measures either side of the barline, as in Western notation. Accidentals and key signature The notation uses a movable Do (1) system. The key signature defines the pitch of "1". So 1=C means "C major". Minor keys are based on the natural minor or the Aeolian mode, and the key signature defines the pitch of "6" of the minor key's relative major. 6=A can be used to refer to A minor, the tonic of which is written as 6. Naturally, the Dorian mode of D can in principle be marked as 2=D and based on 2. In common practice, however, either are normally denoted as 1=C. The same accidentals in the standard notation are used, and as in common practice, an accidental is placed before the notes "1 2 3 4 5 6 7" to raise or lower the pitch and placed after the note names "C D E F G A B", which are used for key signature and chord markings in the numbered system. But these accidentals are relative to the diatonic scale (1 2 3...) rather than the note names (C D E...). For example, even though the leading note for the harmonic C minor scale is B natural, it is written as "5". Key signature changes are marked