rm more duplicates. Index sort on visible word

src/Hardware.tex

@@ -29,7 +29,7 @@ Other components:
 \begin{mdframed}[backgroundcolor=blue!10,linecolor=blue!30]
 \begin{itemize}
 	\item Ethernet cable. \index{ethernet}
-	\item \gls{USB} cable. \index{USB}
+	\item \gls{USB} cable. 
 	\item Enclosure. \index{enclosure}
 	\item Power supply. \index{power supply}
 	\item Tripod. \index{tripod}
@@ -38,7 +38,7 @@ Other components:
 	\item Internet, wifi or ethernet.\index{ethernet}
 \end{itemize}
 \end{mdframed}
-\index{ethernet}\index{USB}\index{enclosure}\index{power supply}
+\index{ethernet}\index{enclosure}\index{power supply}
 \index{tripod}\index{mount}\index{wifi}
 
 \section{Camera}
@@ -234,14 +234,14 @@ is:
 	\item Ethernet cable, internal, short white (came with Bosch enclosure). \index{ethernet}\index{Bosch}
 	\item \gls{PoE} ethernet cable, external, plugged into \gls{PoE} switch for data and power. 
 	\item \gls{USB} 3 cable, internal, way too long, needs replacing, from Odroid to camera. XXX flat connector
-	\item \gls{USB} 3 cable, external, from Odroid to \gls{telescope} mount. XXX large rectangle connector \index{USB}
+	\item \gls{USB} 3 cable, external, from Odroid to \gls{telescope} mount. XXX large rectangle connector 
 	\item ``Custom'' 12\gls{V} \gls{DC} power cable from Bosch \gls{PoE} to Odroid.
 	\item Assorted nuts, bolts, and washers for an ad-hoc standoff height.
 \end{itemize}
 \end{mdframed}
 \index{camera}\index{Kowa}\index{The Imaging Source}\index{Odroid}
 \index{fan}\index{power cable}\index{mount plate}\index{Bosch}
-\index{ethernet}\index{USB}\index{power cable}
+\index{ethernet}\index{power cable}
 
 \begin{sidewaysfigure}[p!]
 	\begin{center}

src/Identify.tex

@@ -11,8 +11,8 @@
 
 \section{Overview of Satellite Identification}
 \label{sec:overview-identify}
-\index{identify}\index{SIDLOC}
+\index{identify}
-\index{SSA}
+
 
 The \gls{LSF} is developing a project called \gls{SIDLOC},
 for \gls{satellite} identification and localization. With the

src/SNOUG.tex

@@ -221,7 +221,6 @@ leftmargin=1cm,rightmargin=1cm
 
 \renewcommand{\abbreviationsname}{List of Abbreviations}
 \renewcommand{\acronymname}{List of Acronyms}
-%\makeglossaries
 \makeindex
 
 \setabbreviationstyle{long-short}
@@ -232,14 +231,14 @@ leftmargin=1cm,rightmargin=1cm
 \GlsXtrEnableIndexFormatOverride
 
 % use first field instead of name field
-\renewcommand*{\glsxtrautoindexentry}[1]{\string\glsentryfirst{#1}}
+%\renewcommand*{\glsxtrautoindexentry}[1]{\string\glsentryfirst{#1}}
 
 % use long form for the sort value, if provided:
-\renewcommand*{\glsxtrautoindexassignsort}[2]{%
+%\renewcommand*{\glsxtrautoindexassignsort}[2]{%
-  \ifglshaslong{#2}%
+%  \ifglshaslong{#2}%
-  {\glsletentryfield{#1}{#2}{long}}%
+%  {\glsletentryfield{#1}{#2}{long}}%
-  {\glsletentryfield{#1}{#2}{sort}}%
+%  {\glsletentryfield{#1}{#2}{sort}}%
-}
+%}
 
 % Index glossary, abbreviations, acronyms
 \glssetcategoryattribute{general}{dualindex}{hyperpage}
@@ -248,8 +247,6 @@ leftmargin=1cm,rightmargin=1cm
 
 % First letter upper
 \glssetcategoryattribute{general}{glossname}{firstuc}
-%\glssetcategoryattribute{abbreviation}{glossname}{uc}
-%\glssetcategoryattribute{acronym}{glossname}{uc}
 %%% END GLOSSARY %%%
 
 %%% DEBUG %%%

src/Software.tex

@@ -410,7 +410,7 @@ A basic, widely available \gls{COTS} \gls{USB} \gls{GNSS} device
 with a basic (or no!) \gls{antenna} plugged into the \gls{embedded-system}
 can get time and location accurate enough for the
 purposes here. See various U-Blox devices, for example.
-\index{USB}\index{U-Blox}
+\index{U-Blox}
 
 In \gls{Debian} \gls{GNSS} service with a \gls{USB} device can be provided
 by the \texttt{\gls{gpsd}} application.
@@ -525,7 +525,7 @@ See below for sample output from \texttt{cgps}.
 
 \section{NTP}
 \label{sec:software-ntp}
-\index{NTP}
+
 With all the above, time still needs to be configured.
 Configuring \texttt{\gls{gpsd}} isn't enough for correct system time.
 The main system on the Internet used for time synchronization is \gls{NTP}.
@@ -671,7 +671,7 @@ An overview of steps:
 \end{enumerate}
 \end{mdframed}
 \index{v4l2-ctl}\index{mount}\index{track}
-\index{lsusb}\index{cgps}\index{NTP}\index{indiserver}
+\index{lsusb}\index{cgps}\index{indiserver}
 \index{Ekos}\index{Sky-Watcher}\index{The Imaging Source}
 
 
@@ -715,7 +715,7 @@ Bus 001 Device 003: ID 067b:23d3 Prolific Technology, Inc. USB-Serial Controller
 Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 \end{minted}
-\index{The Imaging Source}\index{USB}
+\index{The Imaging Source}
 
 Note the \texttt{The Imaging Source Europe GmbH DMK 33UX174} device is the
 camera and the