K Desktop Environment -  This is our formal name; it is
especially used on all communications intended for external groups
which might not be familiar with KDE yet.

KDE - This is our informal name and abbreviation; it is our preferred casual name.

Do not use different capitalization and hybrid forms, such as:
kde, K desktop environment, KDE Desktop Environment (used upper case
and stand-alone -- note that there are no restrictions for the (lower
case) descriptive usage of "the KDE desktop environment" in continous
text).

The names in this guide are the only ones that may be used for
publications and other materials, either in print or electronic form.