Rule 3-2-3 and friend Declarations

[gs]

Am I correct in presuming rule 3-2-3 does not apply to friend declarations? For example, if I declare a class type in a header file, am I permitted to declare that class as a friend of another type in a different file?

[misra cpp]

This rule does not preclude the use of friend or forward reference statements, but these must be in a separate header file.

A future edition may reconsider this point