+@strong{Warning:} Every piece of LilyPond input needs to have @strong{@{ curly
+braces @}} placed around the input. The braces should be also be
+surrounded by a space unless they are at the beginning or end of a
+line to avoid ambiguities. These may be omitted in some examples in this
+manual, but don't forget them in your own music!
+
+@cindex Case sensitive
+In addition, LilyPond input is @strong{case sensitive}. @code{ @{ c d e @} }
+is valid input; @code{ @{ C D E @} } will produce an error message.
+
+@sp 1
+
+@unnumberedsubsec Entering music and viewing output
+
+In this section we will explain what commands to run
+and how to view or print the output.
+
+@unnumberedsubsubsec MacOS X
+
+If you double click LilyPond.app, it will open with an example
+file. Save it, for example, to @file{test.ly} on your Desktop, and
+then process it with the menu command @samp{Compile > Typeset File}.
+The resulting PDF file will be displayed on your screen.
+
+Be warned that the first time you ever run lilypond will take a minute
+or two because all of the system fonts have to be analyzed first.
+
+For future use of LilyPond, you should begin by selecting "New"
+or "Open".
+
+@unnumberedsubsubsec Windows
+
+On Windows, start up a text-editor@footnote{Any simple or
+programmer-oriented editor with UTF-8 support will do, for example
+Notepad. Do not use a word processor, since these insert formatting
+codes that will confuse LilyPond.} and enter
+
+@verbatim
+{
+ c' e' g' e'
+}
+@end verbatim
+
+Save it on the desktop as @file{test.ly} and make sure that it is not
+called @file{test.ly.TXT}. Double clicking @file{test.ly} will process
+the file and show the resulting PDF file.
+
+
+@unnumberedsubsubsec Unix
+
+Begin by opening a terminal window and starting a text editor. For
+example, you could open an xterm and execute
+@code{joe}@footnote{There are macro files for VIM addicts, and there
+is a @code{LilyPond-mode} for Emacs addicts. If they have not been
+installed already, refer to the file @file{INSTALL.txt}. These
+easiest editing environment is @file{LilyPondTool}. See
+@ref{Editor support} for more information.}. In your
+text editor, enter the following input and save the file as
+@file{test.ly}
+
+@verbatim
+{
+ c' e' g' e'
+}
+@end verbatim
+
+@noindent
+To process @file{test.ly}, proceed as follows