begingrid options .. endgrid

This command inserts a grid of chords for improvisation and, also, it may define the chord symbols of the current tune.

The grid may appear anywhere in the ABC file. It is not subject to any transposition.

Each line in the source defines a line in the grid.

The cells in the grid are separated by measure bars, |, |: or :|.

A cell may contain one to four blank separated chords. The special names . or - indicate the chord continues on this beat.

All options are optional. They are:

chord-define

When present, the chords of the grid are inserted in the tune as chord symbols.

noprint

This option is used with chord-define. It prevents the grid to be printed.

lm=value

This option sets the left margin of the grid in pixels. When value is -1 (default), the grid is centered in the page.

width=value

This option sets the width of the grid in pixels. When value is 0 (default), a computed width is used.

Example re-written from a tune in the New Orleans Jambook collection.

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