although there is no functional difference...

Attributes GH PR #978: https://github.com/ArcticaProject/nx-libs/pull/978

fullscreen= now accepts the new value "2" for a fullscreen covering
only one screen. -geometry and geometry= now know additional keywords
"allscreens" and "onescreen".

Fixes ArcticaProject/nx-libs#923

This reverts commit 4eba4f53.

Attributes GH PR #984: https://github.com/ArcticaProject/nx-libs/pull/984

just as the rest of the Xserver is alsow doing

nxagentWindowTopLevel() and nxagentNeedConnectionChange() return Boolean
nxagentPixmapIsVirtual() and nxagentIsShmPixmap(), too.

They have been changed to tri-state variables (1, 0 and UNDEFINED)
between nxagent 1.5.0-90 and -93, for no obvious reason.