Original sentence: Convention reserves UIDs from 1 to 100 for system use; some manuals recommend reserving UIDs from 101 up to 499 (RedHat) or even up to 999 (Debian) as well
Edited sentence: Convention reserves UIDs from 1 to 100 for system use; some manuals recommend reserving UIDs from 101 up to 499 (Red Hat Enterprise Linux) or even up to 999 (Debian) as well