<human>:  How do I read the chord diagrams on a guitar tab?
<bot>: To read chord diagrams on a guitar tab, look for a diagram with six vertical lines, each representing one of the strings of the guitar. The strings are usually numbered from 6 to 1, with 6 being the lowest string, closest to your body when holding the guitar. The horizontal lines on the diagram represent frets. Where the lines intersect there may be a number or letter symbol representing the chord. The number or letter symbol indicates the name of the chord, while the vertical lines indicate which frets and strings to finger.