Push a Hexagon Viewport (
"hexVP", see hexVP-class) on to
the tree of (grid) viewports, calling
a hexagon viewport, i.e., an object of class
which viewport to push, either 'on' or 'off' are the allowed arguments, see details.
A hexagon viewport (
"hexVP") object has slots for two replicate
viewports one with clipping turned on and one with clipping off. This
allows toggling the clipping option.
pushViewport from the