Well, well. The capability of allowing echo prior to model loading is 
now part of Jmol. And with it comes an intriguing possibility. There are 
several other sorts of things that don't rely upon atoms. Like draw 
objects (points, planes, etc.) and some sorts of isosurfaces and pmesh 
and ... what else?

When you start Jmol now (in the next release, that is), you don't need 
to load a model to have some fun. Basically the black box you are 
looking at is a cube centered on the origin with a face-to-face distance 
of 20 Angstroms (from {-10,-10,-10} to {10,10,10}.
Of course you can set the zoom to whatever you want, but that's 
basically full screen, zoom 100.

Try this:

zap # only necessary if there was something else around

isosurface atomicorbital 3 2 1
draw plane {0 0 0} {3 0 0} {0 3 0}
set echo myecho 200 50
set echo myecho center
echo There is no|molecule,|just a box

If you really want to have some fun, load a surface file:

isosurface "ch3cl.jvxl"

All sorts of fun.

Thanks for suggesting getting echo capability before model loading!

Bob

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