Each rule and recommendation is given a unique identifier within a standard. These identifiers consist of three parts:
- A a three-letter mnemonic representing the section of the standard
- A a two-digit numeric value in the range of 00-99
- The the letter "A" or "C" to indicate whether the coding practice is an advisory recommendation or a compulsory rule
The three-letter mnemonic can be used to group similar coding practices and to indicate to which category a coding practice belongs.
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