The dots are typically arranged in a triangular pattern and carry multiple layers of meaning within Masonic tradition.
The symbol has been used in Freemasonry since its earliest speculative days, at least as early as 1764, where it is found in the registers of La Sincerité Lodge in Besançon, France which strongly indicates an earlier use.
[1] While some attribute its widespread adoption to a circular issued by the Grand Orient de France on August 12, 1774, evidence shows earlier usage.
Several improper variations have emerged over time that should be avoided: The correct format is W∴M∴, using the proper symbol (∴) rather than substituting periods or colons.
Using the proper symbol helps prevent degradation of the traditional format and maintains the integrity of Masonic written communication.