StaffGroup troubles

[Joyce Wilson]

I'm a new Lilypond user coming from an ABC background, and I'm having 
problems with StaffGroup.  It's my understanding that if I want the two 
staves in a duet to be connected (other than at the left edge), I need 
to enclose the two staves in a StaffGroup.  I found an example or two 
which I tried emulating, but got error messages.  So I tried pasting in 
a sample from the Lilypond user manual:



  < \context StaffGroup <
\context Staff = up { e'4 d'
          \bar "||"
          f' e' }
       \context Staff = down { \clef bass c4 g e g } >
\context Staff = pedal { \clef bass c2 c2 } >



I saved this in a file (test.ly) by itself and ran it through ly2dvi, 
and still got error messages:



Running LilyPond...
GNU LilyPond 1.6.6
Now processing: `test.ly'
Parsing...
/home/wilsonjb/test.ly:0:3: error: parse error, unexpected '<':
  <
    \context StaffGroup <

/home/wilsonjb/test.ly:0:21: error: parse error, unexpected '{':
\context Staff = up {
                      e'4 d'

/home/wilsonjb/test.ly:3:30: error: parse error, unexpected '{':
       \context Staff = down {
                               \clef bass c4 g e g } >

/home/wilsonjb/test.ly:4:24: error: parse error, unexpected '{':
\context Staff = pedal {
                         \clef bass c2 c2 } >


/home/wilsonjb/test.ly:4:41: warning: Braces don't match:
\context Staff = pedal { \clef bass c2 c2
                                          } >

LilyPond failed on an input file (exit status 1).
Trying to salvage the rest.

warning: no LilyPond output found for `test'
Running LaTeX...



Thanks for any help!
Joyce Wilson