Hi! This is a Very nice solution.
However, in my paper "Fast and Exact Computation of All Quantiles for Very Large Amounts of Data" I wanted to combine a curve (created using SERIES statement in SGPLOT) and Histograms.
See e.g. Fig 6.
BUT that was NOT easy. My solution was to use %ANNOTATE and %RECTANGLE - 63 of them. I have been looking for easier and faster ways of creating this diagram.
A lot of code. Simple when you have learned it (But NOT before that).

BARWIDTH is above fixed for the HIGHLOW statement. Will the HIGHLOW statement be further developed?

Another way to put it: %ANNOTATE is REALLY GREAT - but you MUST have to time to learn it and to try it out. I would very much like a %ANNOTATE with more Warnings and Error messages.