x11proto-present-dev 1.1-1 (amd64 binary) in ubuntu bionic

 This package provides development headers describing the wire protocol
 for the Present extension, which provides a way for applications to update
 their window contents from a pixmap in a well defined fashion, synchronizing
 with the display refresh and potentially using a more efficient
 mechanism than copying the contents of the source pixmap.
 .
 More information about X.Org can be found at:
 <URL:http://www.X.org>
 .
 This package is built from the X.org presentproto proto module.