@c -*-texinfo-*-
@c This is part of the GNU Guile Reference Manual.
-@c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2010, 2011, 2013
-@c Free Software Foundation, Inc.
+@c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2010, 2011,
+@c 2013-2014 Free Software Foundation, Inc.
@c See the file guile.texi for copying conditions.
@node Parallel Installations
libraries providing additional features (@pxref{Modules and
Extensions}). Run @command{pkg-config guile-@value{EFFECTIVE-VERSION}
--variable=extensiondir} to see its value.
+
+@item guile
+@itemx guild
+@cindex program name transformations, dealing with
+The absolute file name of the @command{guile} and @command{guild}
+commands@footnote{The @code{guile} and @code{guild} variables defined
+starting from Guile version 2.0.12.}. Run @command{pkg-config
+guile-@value{EFFECTIVE-VERSION} --variable=guile} or
+@code{--variable=guild} to see their value.
+
+These variables allow users to deal with program name transformations
+that may be specified when configuring Guile with
+@code{--program-transform-name}, @code{--program-suffix}, or
+@code{--program-prefix} (@pxref{Transformation Options,,, autoconf, GNU
+Autoconf Manual}).
@end table
@noindent