Kurt,
One last question:
Do those Moon Phase fonts support Unicode mapping?
From the GNUplot Font Help page:
"The fonts are retrieved from the usual fonts subsystems. Under Windows,
those fonts are to be found and configured in the entry "Fonts" of the
control panel. Under UNIX, they are handled by "fontconfig"."
"Pango, the library used to layout the text, is based on utf-8. Thus, the pdfcairo
terminal has to convert from your encoding to utf-8. The default input
encoding is based on your 'locale'. If you want to use another encoding,
make sure gnuplot knows which one you are using. See `encoding` for more
details."
"Pango may give unexpected results with fonts that do not respect the unicode
mapping. With the Symbol font, for example, the pdfcairo terminal will use the map
provided by http://www.unicode.org/ to translate character codes to unicode.
Note that "the Symbol font" is to be understood as the Adobe
Symbol font, distributed with Acrobat Reader as "SY______.PFB".
Alternatively, the OpenSymbol font, distributed with OpenOffice.org as
"opens___.ttf", offers the same characters. Microsoft has distributed a
Symbol font ("symbol.ttf"), but it has a different character set with
several missing or moved mathematic characters. If you experience problems
with your default setup (if the demo enhancedtext.dem is not displayed
properly for example), you probably have to install one of the Adobe or
OpenOffice Symbol fonts, and remove the Microsoft one.
Other non-conform fonts, such as "wingdings" have been observed working."
With thanks again for all your effort on this.