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→Fret Maps/Chord Charts
Each '''line''' of text represents a string. The '''vertical bars''' represent the physical frets. (You fret "behind" the fret like in the maps above; see [[Basic Technique]].) The last '''line of text with the numbers''' may or may not be present. It specifies the fret numbers. Since fretboard maps and chord charts are patterns that can be used on any group of frets on the guitar, they are not necessarily tied to any particular fret numbers, which is where their power lies.
In the above examples, the ''0th fret'' is sometimes marked. This means play the open string.
The first figure is a ''fretboard map'' or ''scale map/chart/pattern''. The '''x's''' represent frets on that string that are part of whatever scale is being illustrated. The '''R's''' indicate ''root notes'' of the scale. The '''*'s''' indicate that these are the same note, but can be played in either location. These maps are a more compact way than tab to demonstrate the fretboard pattern of a particular scale.