What is the allowable drift limit?

Excuse me, could you please clarify for me what exactly is meant by the term "allowable drift limit" in the context of cryptocurrency or finance? Is it a regulatory measure put in place to prevent excessive fluctuations in the value of digital assets, or perhaps it refers to a certain tolerance level for deviations in performance metrics for financial instruments? I'm eager to understand the specifics of this concept and how it might impact investors and the market as a whole.