[lilypond-book] @format environments

[Michael Käppler]

Hi everyone, (Werner in particular ;))

I'm trying to understand the usage of quoting and formatting
environments that occurs
when lilypond-book transforms a .tely file to .texi.

The following snippet, e.g.,
=================
@lilypond[verbatim]
\relative {
a4 b c d
}
@end lilypond
=================
is being transformed into
=================
@format
@exampleindent 0
@verbatim
\relative {
a4 b c d
}
@end verbatim
@end format
[...] (Info and HTML stuff)

@iftex
@include 7a/lily-21179cd9-systems.texi
@end iftex
=================

What I do not understand here:
The @verbatim environment is not indented by default, as far as I can see.
What is the reason to set '@exampleindent 0', here?

(And the enclosing @format environment to scope
the effect of @exampleindent 0)

Cheers,
Michael