1. About IEC publications
Where can I find Interpretation sheets?
An interpretation sheet provides a quick formal explanation to an urgent request by a user of a standard (testing laboratory, manufacturer, etc.). Changes of requirements or test procedures in a standard by means of an interpretation sheet shall be avoided. It is recognized that it is sometimes difficult to define what is a "matter of interpretation" for a given standard.
For more information please refer to ISO/IEC Directives.
All the Interpretation sheets can be freely downloaded here.