*) When using graphics, MPI will sometimes report an error during mpi_finalize.
Irritating, but probably harmless.

*) the equilibrated residual error estimator does not get the optimal
convergence rate when the cross derivative term cxy is nonzero.  Use one of the
other error estimators.

*) the color key does not get resized when the graphics window is resized.
You have to perform some action that redraws the window, for example "change"
the element edge color to whatever it currently is.

*) isosurface and face transparency requires the drawing primitives be sorted
from back to front.  To reduce computation time, PHAML sorts the elements
instead, which may cause some artifacts.  More importantly, it does not
resort them while the image is rotated, so a sufficiently large rotation
will destroy the image.  In this case, redraw the image.

*) If both PETSc and ZOLTAN are used, and PETSc was built with download-parmetis
(which is required with download-mumps or download-superlu), then ParMETIS
will not work with ZOLTAN.

*) In 3D it is possible for phaml_evaluate to report that a point is not in the
domain (i.e. return a 0 solution value) when it is contained in an element with
a circular boundary.
