diff --git a/manual/advanced_topics/viewports/colour-uivp-syntax.tex b/manual/advanced_topics/viewports/colour-uivp-syntax.tex
index e681f45..cb759f8 100644
--- a/manual/advanced_topics/viewports/colour-uivp-syntax.tex
+++ b/manual/advanced_topics/viewports/colour-uivp-syntax.tex
@@ -1,6 +1,6 @@
   \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
+    \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}
 
@@ -11,3 +11,4 @@
 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.
+
diff --git a/manual/advanced_topics/viewports/colour-vp-syntax.tex b/manual/advanced_topics/viewports/colour-vp-syntax.tex
index c884517..de424dc 100644
--- a/manual/advanced_topics/viewports/colour-vp-syntax.tex
+++ b/manual/advanced_topics/viewports/colour-vp-syntax.tex
@@ -3,13 +3,13 @@
 {\config{\%V}}{\textbar}x{\textbar}y{\textbar}[width]{\textbar}[height]{\textbar}[font]{\textbar}[fgcolour]{\textbar}[bgcolour]{\textbar}%
 
     \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
+      \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.
       \item Only the coordinates \emph{have} to be specified. Leaving the other
       definitions blank will set them to their default values.
-      \note{The correct number of {\textbar}s with hyphens in blank fields
-      are still needed in any case.}
+      \note{The correct number of `{\textbar}'s (vertical bars) with hyphens in
+      blank fields are still needed in any case.}
     \end{itemize}
 
 \begin{example}
@@ -23,4 +23,5 @@
   width/height & remaining part of screen \\
   font & user defined \\
   forground/background colours & defined by theme \\
-\end{rbtabular}
\ No newline at end of file
+\end{rbtabular}
+
diff --git a/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex b/manual/advanced_topics/viewports/grayscale-uivp-syntax.tex
index 3b420ce..23bc0f3 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.
+
diff --git a/manual/advanced_topics/viewports/grayscale-vp-syntax.tex b/manual/advanced_topics/viewports/grayscale-vp-syntax.tex
index 9f15b51..ec8db02 100644
--- a/manual/advanced_topics/viewports/grayscale-vp-syntax.tex
+++ b/manual/advanced_topics/viewports/grayscale-vp-syntax.tex
@@ -3,14 +3,14 @@
 {\config{\%V}}{\textbar}x{\textbar}y{\textbar}[width]{\textbar}[height]{\textbar}[font]{\textbar}[fgshade]{\textbar}[bgshade]{\textbar}%
 
     \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.
       \item Only the coordinates \emph{have} to be specified. Leaving the other
       definitions blank will set them to their default values.
-      \note{The correct number of {\textbar}s with hyphens in blank fields
-      are still needed in any case.}
+      \note{The correct number of `{\textbar}'s (vertical bars) with hyphens in
+      blank fields are still needed in any case.}
     \end{itemize}
 
 \begin{example}
@@ -25,3 +25,4 @@
   font & user defined \\
   shade & black foreground on white background \\
 \end{rbtabular}
+
diff --git a/manual/advanced_topics/viewports/mono-uivp-syntax.tex b/manual/advanced_topics/viewports/mono-uivp-syntax.tex
index bdf0a28..d8e8d5e 100644
--- a/manual/advanced_topics/viewports/mono-uivp-syntax.tex
+++ b/manual/advanced_topics/viewports/mono-uivp-syntax.tex
@@ -1,5 +1,5 @@
   \begin{itemize}
-    \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}
 
@@ -9,3 +9,4 @@
 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 is
 defined in the theme \fname{.cfg} file or in the \setting{Theme Settings} menu.
+
diff --git a/manual/advanced_topics/viewports/mono-vp-syntax.tex b/manual/advanced_topics/viewports/mono-vp-syntax.tex
index 3126d81..20c16c8 100644
--- a/manual/advanced_topics/viewports/mono-vp-syntax.tex
+++ b/manual/advanced_topics/viewports/mono-vp-syntax.tex
@@ -7,8 +7,8 @@
       user-selected font.
       \item Only the coordinates \emph{have} to be specified. Leaving the other
       definitions blank will set them to their default values.
-      \note{The correct number of {\textbar}s with hyphens in blank fields
-      are still needed in any case.}
+      \note{The correct number of `{\textbar}'s (vertical bars) with hyphens in
+      blank fields are still needed in any case.}
     \end{itemize}
   
 \begin{example}
@@ -22,3 +22,4 @@
   width/height & remaining part of screen \\
   font & user defined \\
 \end{rbtabular}
+