1 files changed, 4 insertions, 3 deletions

diff --git a/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex b/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex
index 3b420ce7d5..23bc0f38a5 100644
--- a/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex
+++ b/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex
@@ -1,14 +1,15 @@
   \begin{itemize}
-    \item 'fgshade' and bgshade are numbers in the range '0' (= black) to '3'
+    \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
+    \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
+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 shades are defined in the theme
 \fname{.cfg} file or in the \setting{Theme Settings} menu.
+