Original sentence: Microsoft intended to use ISO 8859 standards in Windows, but soon replaced the unused C1 control characters with characters sought by customers but not in the ISO set, thus making code page 1252 proprietary.Other vendors did likewise but did not make the same choices, with the result that information interchange between systems was made difficult
Edited sentence: Microsoft intended to use ISO 8859 standards in Windows, but soon replaced the unused C1 control characters with characters sought by customers but not in the ISO set, thus making code page 1252 proprietary and inconsistent with choices made by other vendors