The Rule's characteristic move is to set a measure and then allow it to be adjusted. Food, drink, sleep, clothing and work are each given a provision, and each provision comes with an instruction to the superior to increase or reduce it for the sick, the young, the old, the traveller and those doing heavy labour. Even the assignment of psalms is offered with permission to rearrange it if a better order is found. The document expects to be applied by someone using judgment.
The commitments it asks for are equally distinctive. Alongside obedience it requires stability, binding a member to one community rather than to wandering, and a continuing conversion of life. Guests are to be received as Christ, and the reception of the poor is singled out for particular attention. Its dominance in the West was not automatic. It circulated among other rules for two centuries, and became the standard through deliberate Carolingian legislation promoting it above the alternatives.
From that point every major Western monastic movement, including the reforming orders that broke with existing houses precisely to keep the Rule more strictly, defined itself in relation to this one text, and the communities that follow it today are the longest continuous institutional readership any of these documents has.