A code in which each valid instance must conform to a particular pattern, with the pattern inherent in the code rather than supplied or established externally, for example, an M-out-of-N code.

• 一种代码,其中每一个有效的实例必须与一特定的模式相一致,此模式为代码中所固有的模式,而不是外部提供或建立的。例如,一种N中取M的代码。