NAME

       tkvars - Variables used or set by Tk
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DESCRIPTION

       The  following  Tcl  variables  are  either  set  or  used  by  Tk at various times in its
       execution:

       tk_library     This variable holds the file name for a directory containing a  library  of
                      Tcl  scripts  related  to Tk.  These scripts 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 tcl_library is set when Tk is added to an interpreter;
                      this  is done by searching several different directories until one is found
                      that  contains  an  appropriate  Tk  startup  script.   If  the  TK_LIBRARY
                      environment  variable exists, then the directory it names is checked first.
                      If TK_LIBRARY is not set or does not refer  to  an  appropriate  directory,
                      then  Tk  checks  several  other directories based on a compiled-in default
                      location, the location of the Tcl library directory, the  location  of  the
                      binary  containing the application, and the current working directory.  The
                      variable can be modified  by  an  application  to  switch  to  a  different
                      library.

       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.

       tk::Priv       This variable is an array containing several pieces of information that are
                      private to Tk.  The elements of tk::Priv are used by Tk library  procedures
                      and default bindings.  They should not be accessed by any code outside Tk.

       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.

       tk_textRedraw

       tk_textRelayout
                      These variables are set by text widgets when they have debugging turned on.
                      The  values  written  to  these variables can be used to test or debug text
                      widget operations.  These variables are mostly used by Tk's test suite.

       tk_version     Tk sets this  variable  in  the  interpreter  for  each  application.   The
                      variable  holds  the  current  version number of the Tk library in the form
                      major.minor.  Major and 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.

KEYWORDS

       variables, version, text