More texture options.
Describe new kira features (trails, H-R diagram, etc.).
Move them into their own kira/Starlab section.
XXX "sel" command not yet documented.

of picked stars.

dynamical->solar mass unit conversion.
If it knows, then "kira massscale" only allows user
to override if user-supplied value ends with "!",
e.g. "kira mscale 600!".

Revert to compatible texture behavior: texture -A is again the default,
use texture -O for "over"-style blending.

from previous time.  Add TXF_OVER txflags bit.

``sel <src>'' alone now works too, to just report match count.

Add "selcounts()" function to count particles matching given SelOp pattern.

of command/history box.  Needs to be set before they're created,
apparently -- ctrl-K trick doesn't work so well.

Doesn't seem to work, though -- I still see the regular old arrow.  Why not?

able to track collections rather than single particles (not yet though).
Trails are relative to tracked-point position, so can be non-inertial.

Warp pointer under X.
And, justify numeric labels so they're always visible.

Offer selsrc2dest(), seldest2src().

Compute fake aggregate temp/luminosity for CM nodes.
Oops, marks need their own sel[] array!
Allow adjusting H-R diagram alpha values too.

And, report match counts from "sel", "thresh", "emph".

Pay attention to emph/see settings.
Get selection working properly.

    selsrc(), seldest(), selname(), seltoken().
"thresh" now accepts "-s 'destexpr'".
Add new selthresh SelOp.