In all civilised nations it is assumed that all citizens know the laws of the land.
Should they inadvertently break one of them a plea of ignorance is not considered valid. In like manner every Master Mason is credited with an acquaintance with Masonic rules, practices and customs.
This applies to nothing so much as to the land-marks. Every candidate for the Master's chair is supposed to be well skilled in the ancient charges, regulations and LANDMARKS of the order. Most Master Masons are familiar with the "charges" and 'regulations.''
Very few know anything of the "landmarks."
Title
1924 - The Ancient Landmarks of the Order - Bro G C Glanville.