@c "prs/macro-echo.texi"
@c extracted from "../../src/Object/lang/PRS_macro_registry.cc"
@c by "$(top_srcdir)/scripts/extract_texinfo.awk".

@defmac echo nodes...
Diagnostic.  This macro just prints @samp{echo(...)} back out
where the original arguments are substituted with canonical hierarchical 
instance (node) names.
This demonstrates how one can add custom PRS macros.  
@end defmac

