1 files changed, 14 insertions, 0 deletions

diff --git a/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex b/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex
new file mode 100644
index 0000000000..3b420ce7d5
--- /dev/null
+++ b/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex
@@ -0,0 +1,14 @@
+  \begin{itemize}
+    \item 'fgshade' and bgshade are numbers in the range '0' (= black) to '3'
+    (= white).
+    \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}
+his 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 shades are defined in the theme
+\fname{.cfg} file or in the \setting{Theme Settings} menu.