软件包：nx-x11proto-xfixes-dev（2:3.5.99.27-1.1 以及其他的） [debports]
nx-X11 'xfixes' extension wire protocol
NX is a software suite which implements very efficient compression of the X11 protocol. This increases performance when using X applications over a network, especially a slow one.
This package provides development headers describing the wire protocol for the XFIXES extension.