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-# Copyright (c) 1990-1994 The Regents of the University of California.
-# Copyright (c) 1994-1996 Sun Microsystems, Inc.
-# See the file "license.terms" for information on usage and redistribution
-# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-#
-#
-
-=head1 NAME
-
-tkvars - Variables used or set by Tk
-
-=for category Tk Generic Methods
-
-=head1 DESCRIPTION
-
-The following perl variables are either set or used by Tk at various times
-in its execution. (For a list of variables used by perl see L<perlvar>.)
-
-=over 4
-
-=item B<$Tk::library>
-
-This variable holds the file name for a directory containing the modules
-related to Tk. These modules include an initialization
-file that is normally processed whenever a Tk application starts up,
-plus other files containing procedures that implement default behaviors
-for widgets.
-The initial value of B<$Tk::library> is set when Tk is added to
-an interpreter; this is done by searching searching for a directory
-named Tk in the directory where the file F<Tk.pm>, or the first
-directory F<Tk> in C<@INC>.
-
-The B<TK_LIBRARY> environment variable used by Tcl/Tk is not
-supported by perl/Tk. Please use L<@INC|perlvar/@INC> to change where modules
-are searched.
-
-B<Note:> This is Tcl remnant. With perl it makes more sense to
-use C<@INC> and C<%INC>).
-
-=item B<$Tk::patchLevel>
-
-Contains a decimal integer giving the current patch level for Tk.
-The patch level is incremented for each new release or patch, and
-it uniquely identifies an official version of Tk.
-
-B<Note:> this is Tcl remnant. With perl it makes more sense to
-use B<$Tk::VERSION> described below.
-
-=item B<$Tk::strictMotif>
-
-This variable is set to zero by default.
-If an application sets it to one, then Tk attempts to adhere as
-closely as possible to Motif look-and-feel standards.
-For example, active elements such as buttons and scrollbar
-sliders will not change color when the pointer passes over them.
-
-=item B<$Tk::VERSION>
-
-The variable holds the current version number of the perl/Tk
-release in the form I<major>.I<minor>. I<Major> and
-I<minor> are integers.
-
-The I<major> version number shows on which
-Tcl/Tk release perl/Tk is based. E.g., B<402> means based on
-Tcls Tk 4.2. (Patchlevel of Tcls Tk are not incorporated because
-perl/Tk tended to be ``I<ahead>'' of them on some fixes and behind on
-others. The first digest of the major version number increases in
-any Tk release that includes changes that are not backward compatible
-(i.e. whenever existing perl/Tk applications and scripts may have to change to
-work with the new release).
-
-The I<minor> version depends on perl/Tk only. It uses the
-'even'='stable', 'odd'='experimental' scheme that linux uses:
-
- .0xx - inherently 'alpha'
- .1xx - experimental 'beta'
- .2xx - stable
- .3xx - experimental
- .4xx - stable
- ...
-
-The minor version number increases with
-each new release of Tk, except that it resets to zero whenever the
-major version number changes.
-
-=item B<$Tk::version>
-
-The variable holds the current version number of the Tk
-library in the form I<major>.I<minor>. I<Major> and
-I<minor> are integers. The major version number increases in
-any Tk release that includes changes that are not backward compatible
-(i.e. whenever existing Tk applications and scripts may have to change to
-work with the new release). The minor version number increases with
-each new release of Tk, except that it resets to zero whenever the
-major version number changes.
-
-B<Note:> this is Tcl remnant. With perl it makes more sense to
-use B<$Tk::VERSION> described above.
-
-=back
-
-=head1 KEYWORDS
-
-variables, version
-
-=cut
-