Rules:
Diagonals are always 5 wave structures.
Structure = 3-3-3-3-3 or 5-3-3-3-3
Leading Diagonals happen in Wave 1 of an Impulse or Wave A of a ZigZag.
Wave 2 & 4 always subdivide in ZigZag corrections.
Wave 2 Never moves beyond origin of Wave 1.
Wave 3 must go beyond Wave 1.
Wave 4 must move into wave 1 range but not beyond Wave 2.
Wave 5 must go beyond Wave 3, there should be no "Truncation".
In Contracting Diagonals, Wave 3 is always shorter than Wave 1, Wave 4 Shorter than Wave 2, and Wave 5 shorter than Wave 3.
In Expanding Diagonals, Wave 3 is always longer than Wave 1, Wave 4 longer than Wave 2, and Wave 5 longer than Wave 3.
Guidelines:
Wave 1, 3 & 5 are usually divided in ZigZags but may also be an Impulse wave.
If Waves 1 is a Leading Diagonal, then Wave 3 is Usually Extended.
Connecting ends of Waves 1-3 and 2-4 form Contracting or Expanding Wedges.
In a Contracting Diagonal, Wave 5 Usually ends beyond the Wedge Line of Wave 1-3 ("Throw-Over") .
In an Expanding Diagonal, Wave 5 stops just short of reaching the Wedge Line of Wave 1-3.
Please see the chart for more favorable Fibonacci counts for possible Wave terminations.