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diff --git a/manual/advanced_topics/viewports/colour-uivp-syntax.tex b/manual/advanced_topics/viewports/colour-uivp-syntax.tex
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+++ b/manual/advanced_topics/viewports/colour-uivp-syntax.tex
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+  \begin{itemize}
+    \item 'fgcolour' and 'bgcolour' are 6-digit RGB888 colours - e.g. FF00FF.
+    \item 'font' is a number - '0' is the built-in system font, '1' is the
+    user-selected font.
+  \end{itemize}
+
+\begin{example}
+    \config{ui viewport: 15,20,100,150,-,-,-}
+\end{example}
+This displays the menu starting at 15px from the left of the screen and 20px
+from the top of the screen.  It is 100px wide and 150px high.
+The font and the foreground/background colours are defined in the theme
+\fname{.cfg} file or in the \setting{Theme Settings} menu.