diff --git a/src/Software.tex b/src/Software.tex
index 50b92ed..f56e0be 100644
--- a/src/Software.tex
+++ b/src/Software.tex
@@ -410,6 +410,14 @@ sudo apt update
 sudo apt install kstars indi-bin indi-eqmod indi-gpsd
 \end{minted}
 
+KStars has a sky chart, as can be see in figure \ref{fig:kstars-skychart},
+page \pageref{fig:kstars-skychart}.
+When mount control is functioning, a location on the sky chart, such as a star,
+ can be clicked on and the mount will go to that location and optionally track it.
+Using this, a telescope mount can be used to easily point the camera at a location
+and track it to observe telescopes. It should also provide a superior \gls{FITS} file
+for extracting data (XXX made up).
+\index{KStars}\index{sky chart}\index{GOTO}\index{mount}\index{track}
 
 \begin{sidewaysfigure}[p!]
         \begin{center}
@@ -439,7 +447,7 @@ sudo apt install kstars indi-bin indi-eqmod indi-gpsd
 \end{sidewaysfigure}
 
 
-\section{GNSS}
+\section{GNSS with \texttt{gpsd}}
 \label{sec:software-overview}
 \index{GNSS}\index{GPS}\index{Galileo}\index{GLONASS}\index{Beidou}
 \index{gpsd}
@@ -456,14 +464,16 @@ A basic, widely available \gls{COTS} USB \gls{GNSS} device
 with a basic (or no!) \gls{antenna} plugged into the embedded
 computer can get time and location accurate enough for the
 purposes here. See various U-Blox devices, for example.
-\index{COTS}\index{USB}
+\index{COTS}\index{USB}\index{U-Blox}
 
 In \gls{Debian} \gls{GNSS} service with a USB device can be provided
 by the \texttt{gpsd} application.
+\index{Debian}
 
 \begin{minted}{sh}
 sudo apt install gpsd gpsd-tools
 \end{minted}
+\index{gpsd}
 
 Edit the configuration file, \texttt{/etc/default/gpsd} like:
 
@@ -522,6 +532,7 @@ gpsmon -n
 # or
 cgps -u m
 \end{minted}
+\index{gpsmon}\index{cgps}
 
 Enable to start on boot: