Code doc improvements

Thanks to Sven Mortensen.

siunitx-angle.dtx

@@ -72,7 +72,7 @@
 %   may be given as expressions. The \meta{angle} should be a number as understood
 %   by \cs{siunitx_format_number:nN}, with no uncertainty, exponent or imaginary
 %   part.  The unit symbols for degrees, minutes and seconds are |\degree|,
-%   |\arcminute| and |\arcsecond|, respectively
+%   |\arcminute| and |\arcsecond|, respectively.
 % \end{function}
 %
 % \subsection{Key--value options}

siunitx-compound.dtx

@@ -66,7 +66,7 @@
 %   \end{syntax}
 %   Prints a set of numbers in the \meta{entries}, each of which should
 %   be given as a \meta{balanced text}. Unlike \cs{siunitx_number_list:nn}, this
-%   function may semantically take any form
+%   function may semantically take any form.
 % \end{function}
 %
 % \begin{function}{\siunitx_compound_quantity:nn}
@@ -75,7 +75,7 @@
 %   \end{syntax}
 %   Prints a set of quantities in the \meta{entries}, each of which should
 %   be given as a \meta{balanced text}. Unlike \cs{siunitx_quantity_list:nn}, this
-%   function may semantically take any form
+%   function may semantically take any form.
 % \end{function}
 %
 % \begin{function}{\siunitx_number_list:nn}

siunitx-emulation.dtx

@@ -59,6 +59,8 @@
 %
 % \begin{documentation}
 %
+% This sub-module exposes no API.
+%
 % \end{documentation}
 %
 % \begin{implementation}

siunitx-number.dtx

@@ -102,7 +102,7 @@
 %   \begin{itemize}
 %     \item[\texttt{S}] A single symmetrical uncertainty (\foreign{e.g.}~a
 %       statistical standard uncertainty). The data item here is a single
-%       value representing the uncertainty in the least-significant digits
+%       value representing the uncertainty in the least-significant digits.
 %     \item[\texttt{A}] A single unsymmetrical uncertainty. The data item here
 %       contains two brace groups, each using the same least-significant digit
 %       approach as the \texttt{S} type. The positive component is given first
@@ -537,7 +537,7 @@
 %   setting |down| means that the value will be rounded toward zero. The
 %   setting |nearest| means that the value will be rounded to the nearest
 %   (either up or down), taking account of the setting of |round-half|.
-%   The standard setting is |nearest|
+%   The standard setting is |nearest|.
 % \end{function}
 %
 % \begin{function}{round-half}
@@ -663,7 +663,7 @@
 %   the setting |down| means that the uncertainty will be rounded toward zero.
 %   The setting |nearest| means that the uncertainty will be rounded to the
 %   nearest (either up or down), taking account of the setting of |round-half|.
-%   The standard setting is |nearest|
+%   The standard setting is |nearest|.
 % \end{function}
 %
 % \begin{function}{uncertainty-separator}

siunitx-print.dtx

@@ -70,16 +70,31 @@
 % take place in text or math mode.
 %
 % The printing routines assume that normal \LaTeXe{} font selection commands
-% are available, in particular \cs{bfseries}, \cs{mathrm}, \cs{mathversion},
-% \cs{fontfamily}, \cs{fontseries} and \cs{fontshape}, \cs{familydefault},
-% \cs{seriesdefault}, \cs{shapedefault} and \cs{selectfont}.
-% It also requires the standard
-% \LaTeXe{} kernel commands \cs{ensuremath}, \cs{mbox}, \cs{textsubscript} and
-% \cs{textsuperscript} for printing in text mode. The following packages are
+% are available, in particular
+% \begin{itemize}
+%   \item \cs{bfseries},
+%   \item \cs{mathrm},
+%   \item \cs{mathversion},
+%   \item \cs{fontfamily},
+%   \item \cs{fontseries},
+%   \item \cs{fontshape},
+%   \item \cs{familydefault},
+%   \item \cs{seriesdefault},
+%   \item \cs{shapedefault} and
+%   \item \cs{selectfont}.
+% \end{itemize}
+% It also requires the standard \LaTeXe{} kernel commands
+% \begin{itemize}
+%   \item \cs{ensuremath},
+%   \item \cs{mbox},
+%   \item \cs{textsubscript} and
+%   \item \cs{textsuperscript}
+%  \end{itemize}
+% for printing in text mode. The following packages are
 % also required to provide the functionality detailed.
 % \begin{itemize}
 %   \item \pkg{color}: support for color using \cs{textcolor}
-%   \item \pkg{textcomp}: \cs{textminus}, \cs{textpm} \cs{texttimes} and
+%   \item \pkg{textcomp}: \cs{textminus}, \cs{textpm}, \item \cs{texttimes} and
 %     \cs{textcenteredperiod} for printing in text mode
 %   \item \pkg{amstext}: the \cs{text} command for printing in text mode
 % \end{itemize}

siunitx-symbol.dtx

@@ -59,6 +59,8 @@
 %
 % \begin{documentation}
 %
+% This sub-module exposes no API.
+%
 % \end{documentation}
 %
 % \begin{implementation}

siunitx-unit.dtx

@@ -648,7 +648,7 @@
 %     |power-half-as-sqrt| = |true|\verb"|"|false|
 %   \end{syntax}
 %   Used to determine whether a power of exactly half is converted to
-%   \cs{sqrt} in the output. The standard setting is |false|
+%   \cs{sqrt} in the output. The standard setting is |false|.
 % \end{function}
 %
 % \begin{function}{qualifier-mode}