SPDX-License-Identifier: MIT-CMU ]]> Protocol for telling which is the primary display among the selection of enabled outputs. Warning! The protocol described in this file is a desktop environment implementation detail. Regular clients must not use this protocol. Backward incompatible changes may be added without bumping the major version of the extension. Specifies which output is the primary one identified by their uuid. See kde_output_device_v2 uuid event for more information about it.