Description
The use of terms like ISBN and relatives is sometimes inconsistent:
- ISBN should be in uppercase (not: isbn)
- ISBN-13 (not: ISBN13)
- ISBN-10 (not: ISBN10)
Some files where it should be checked and corrected in text strings:
- doc/specifications/3.10/isbn/functional_requirements.txt
- bin/php/ezconvert2isbn13.php
- bin/php/updateisbn13.php
Additionaly, it has to be "an ISBN number" instead of "a ISBN number"