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→What Does this Mean?
In terms of music, not a whole lot. And '''right now, it seems like unnecessary complexity. However, over time, it actually helps to understand scales and memorize fretboard maps for all over the fretboard for any scale.''' For example, if I told you to play a 3-note per string C major scale in 8th position (this is hypothetical - don't attmept this yet!), then the same scale in 5th position, both fretboard maps are below:
fig. 95 |--|--|x-|--|x-|x-| w/h- ring |--|--|x-|--|x-|R-| w/h- ring |--|x-|x-|--|x-|--| h/w- middle |--|x-|R-|--|x-|--| h/w- middle |x-|--|x-|--|x-|--| w/w- stretch |R-|--|x-|--|x-|--| w/w- stretch
8 9 10 11 12 13
fig. 106 |--|--|x-|R-|--|x-| h/w- middle |--|x-|--|x-|--|x-| w/w- stretch |R-|--|x-|--|x-|--| w/w- stretch |x-|--|x-|--|x-|--| w/w- stretch |x-|--|x-|x-|--|--| w/h- ring |x-|--|x-|R-|--|--| w/h- ring
5 6 7 8 9 10
In figure 95, we have 2 stretch, 2 middle, and 2 ring patterns, going from the 6th to 1st string. In figure 106, we have 2 rings, 3 stretches, and 1 middle. If you know where any root note is for that position, you can derive the scale. Using the 3-note per string patterns, you can quickly build it out. This is far easier to implement than trying to step through the scale as whole and semitones, and far easier to memorize than every note in every map.
Here's the same table from above, but this time ordered so the notes keep ascending the scale in sequence. So the first (C D E) notes are <tt>-8-10-12-</tt>. The next row is for the notes are (F G A), which is <tt>-13-15-17-</tt> or, shifting down one octave, <tt>-1-3-5-</tt>. Since we have 3 notes per string, each row in the table is basically moving up a 4th (C to F is a fourth). Since the guitar is tuned in 4ths, this basically tells us what pattern to play on the next string to keep ascending the scale.
{|class="wikitable"
!Position !! Pattern !! Alt Name !! w/w !! w/h !! h/w !! T1 !! T- !! T2 !! Notes !! Tab !! Starting Note
|-
| 8 || whole/whole || stretch ||x || || || o || || ||(C D E)|| <tt>-8--10-12-</tt> || 1
|-
| 1,13 || whole/whole || stretch || x|| || || || o|| || (F G A)|| <tt>-1--3--5--</tt> || 4
|-
| 7,19|| half/whole || middle || || || x|| || || o ||(B C D)|| <tt>-7--8--10-</tt> || 7
|-
| 0,12 || half/whole || middle || || || x|| o || || ||(E F G) || <tt>-0--1--3--</tt> || 3
|-
| 5,17 || whole/half || ring || || x|| || || || o || (A B C)|| <tt>-5--7--8--</tt> || 6
|-
| 10 || whole/half || ring || ||x || || o || || ||(D E F)|| <tt>-10-12-13-</tt> || 2
|-
| 3,15 || whole/whole || stretch || x || || || || || o || (G A B)|| <tt>-3--5--7--</tt>|| 5
|}