NEWS

Changes from 2.4y to 2.4z

FEATURES
========

graph/stripchart/barchart
   Under Windows, both the "print1" and "print2" operations will 
   pop-up a standard printer dialog when you don't pass a printer
   argument.
graph/stripchart/barchart
   New -state option for both elements and markers.  If "disabled",
   marker or element isn't eligible for binding events.  This is 
   useful when you have lots (>100,000) of data points.
graph/stripchart/barchart
   New axis option -titlealternate lets you place the axis title to
   the top or right of the axis.  This used to automatically happen when 
   you had more than one axis in a margin.  This option lets you control 
   it.
tree
   Both "find" and "apply" operations may be given more than one 
   pattern switch (-exact, -glob, or -regexp).  This performs a
   logical "or"--if any one of the pattern matches, the node is 
   a match.
tree
   Both "find" and "apply" operations now have addition switches
   -keyexact, -keyglob, and -keyregexp (the -key switch works like
   -keyexact).  You may supply more than one switch.   This performs 
   a logical "or"--if any one of the pattern matches, the node is a 
   match.
graph/stripchart/barchart
   New axis options -scrollmin and -scrollmax allow you to specify
   the scroll region.   Thanks to both Meaghan Parizeau 
   <Meaghan_Parizeau@srtelecom.com> and Julian H J
   Loaring <jhjl@bigj.demon.co.uk> for the solution.
graph/stripchart/barchart
   Polygon marker will trigger bindings even if the marker is not
   filled (-fill "") or has no outline (-linewidth 0).  Interior
   is always considered part of the polygon.  
tree
   Tree adaptively restructures data values from a linked list into a
   hash table when the number of values exceeds 20.
configure.in
   Can build BLT with cygwin (gcc under Windows) distribution.  Type 
   ./configure and make to build.  Use -disable-cygwin switch to build 
   "mingw" version. Many thanks to Mumit Khan <khan@pluto.xraylith.wisc.edu> 
   for all the hard work of porting the configure.in and Makefiles.  

BUG FIXES
=========

eps
   Canvas item errors out with "can't get handle to EPS file" message.  
   Thanks to Shamil Daghestani <shamild@hotmail.com> for the bug report.
graph/stripchart/barchart
   Image marker doesn't get scaled correctly when scaling factor is
   large. Thanks to Paul Kienzle <pkienzle@jazz.ncnr.nist.gov> 
   for the bug report and example script.  It really helped.
vector
   "min" and "max" initially don't report the correct value.  Many
   thanks to Alexander Eisenhuth <stacom@stacom-software.de> for the 
   bug report.
treeview/tree
   "show -full $key" operation doesn't work.
graph/stripchart/barchart
   Doesn't display trailing data points when there are more than
   65331 points.  Thanks to Val Shkolnikov <nvsoft@pacbell.net>
   for the bug report.
vector
   Vectors leak memory when accessing them through the Tcl array
   variable.  Thanks to Alexander Eisenhuth <stacom@stacom-software.de>
   for the bug report and especially the test script to demonstrate 
   the problem.
treeview/tree
   In "apply" operation, -regexp, -exact, or -glob switches don't
   work.  Always matches every node.
graph/stripchart/barchart
   Axis "-hide" option no longer accepts "all" value.  "all" was
   supposed to hide the axis *and* all the elements mapped to it.
   I don't think this option ever worked correctly.  It was also
   unclear whether to hide the legend entry, markers, etc.
graph/stripchart/barchart
   Changing a marker's -hide option doesn't take effect until the
   graph is redrawn.  Thanks to Alex Verstak <averstak@vt.edu> for 
   the bug report.
graph/stripchart/barchart
   Spurious characters in PostScript output generated under Windows. 
   Thanks to Cary D. Renzema <Cary.Renzema@analog.com> for the bug 
   report and sample files.
graph/stripchart/barchart
   "snap" operation core dumps or returns X protocol error depending 
   on arguments.  Thanks to Carsten Mortensen <cbm@microlex.dk> for
   both the bug report and the fix.
graph/stripchart/barchart
   Polygon marker not drawn unless no outline is specified (-linewith 0).
   Thanks to Nestor Patino <npatino@infovia.com.ar> for the bug report.
treeview/tree
   Tags are removed when tree or treeview widget is destroyed.  Many 
   thanks to Todd Copeland <todd.copeland@legerity.com> for the report.
treeview/tree
   "index" operation segfaults when tag is empty. Again thanks to Todd
   Copeland <todd.copeland@legerity.com> for the report.
pkgIndex.tcl
   Added checks for package directory and its parent when searching
   for BLT shared library.  Thanks to Anton Hartl <toni@devsoft.com>
   for the bug report.

Changes from 2.4x to 2.4y

FEATURES
========

tree
   Added -notags switch to "restore" operation.  
tree
   Added additional fields to the tree "dump" format.  When trees are
   restored, will try to reuse old node ids (not always possible).  
tree
   Added -label switch to "copy" operation.  This lets you relabel the 
   destination node.
   
BUG FIXES
=========

graph/stripchart/barchart
   PostScript output sometimes includes a spurious box around an axis.  
   Thanks to Harvey.Davies@csiro.au for the bug report and example.
tabset/tabnotebook
   On errors tabnotebook grows ad infinitum.  Thanks to Terri Fischer 
   <terri@ner.com> for the bug report and example.
<general>
   Tcl_Init fails with "can't find usable init.tcl" when running
   bltsh or bltwish compile with ActiveTcl.  Changed Tcl_AppInit to 
   set global "tclDefaultLibrary" variable.  
graph
   "legend get" operation doesn't account for hidden entries 
   (i.e. -label is configured to "").  Thanks to Karl Voskuil 
   <voskuil@ll.mit.edu> for the bug report and the fix.
graph
   NULL pointer referenced (bindingTable) when destroying axis.
bgexec
   File redirection broken under Windows.
graph
   Area under curve not stippled correctly when bitmap is greater than
   8x8 (W95/W98) or device context is a metafile (all?).  Created
   XFillPolygon replacement for Windows.
tree
   Node modifiers are incorrectly ignored when first component is a tag.
treeview
   -shadow option no longer accepts empty string (no shadow). Many 
   thanks to Todd Copeland <todd.copeland@legerity.com> for the report.
vector
   Vector "create" operation slows down using #auto as more vectors 
   are created. Thanks to Todd Copeland <todd.copeland@legerity.com> 
   for the bug report.
treeview/hiertable
   Widget doesn't scroll horizontally correctly when -hideleaves is
   true.  Ignores last level when computing world width.
treeview/hiertable
   Deleting a node doesn't remove tag references to it.  Thanks to 
   Steven Hafer <steven.hafer@legerity.com> for the bug report.
treeview/hiertable
   Giving the -path option to the "index" operation always fails. Thanks 
   to Paul Robins <paul.robins@st.com> for the bug report.
<treeview.mann/hiertable.mann>
   Documentation for the "get" operation isn't clear that it always returns
   a list of lists when the -separator option is "" (the default), even
   when there is only one node specified.

Changes from 2.4w to 2.4x

FEATURES
========

dragdrop
   Back ported 8.3 "dde" command for use with 8.0.

BUG FIXES
=========

treeview/hiertable
   Can't create column that starts with a minus. Thanks to Todd Copeland 
   <todd.copeland@legerity.com> for the bug report.
<Makefile.in>
   pkgIndex.tcl file not getting rebuilt.  Thanks to Terri Fischer 
   <terri@ner.com> for the bug report and fix.
<dragdrop1.tcl,dragdrop2.tcl>
   Send emulation script isn't needed for Tcl8.0 under Windows. Thanks to
   Linh H Phan <phan@grover.jpl.nasa.gov> for the bug report.
graph/stripchart/barchart
   Using pen styles results in a bus error.  Thanks to Julian H J
   Loaring <jhjl@bigj.demon.co.uk> for the bug report.
hiertable/treeview/tree
   List of data values is reversed from 2.4v.  Thanks to Jorge Suit
   Prez Ronda <jsperez@bayesinf.com> for the bug report.
<bltObjConfig.c>
   Missing header file for varargs.  Thanks to Terri Fischer <terri@ner.com>
   for the bug report and fix.
<bltAlloc.c>
   TclpAlloc and TclpFree not found in Tcl 8.0. Again, thanks to Terri
   Fischer <terri@ner.com> for the bug report and fix.
<BLT.mann,barchart.mann,eps.mann,graph.mann,tabset.man>
   Updated manual pages graciously provided by Terri Fischer <terri@ner.com>.

Changes from 2.4v to 2.4w

FEATURES
========

treeview
   New treeview widget is updated version of hiertable.  Uses Tcl_Objs.
   The "hiertable" and "treeview" are the 100% syntax compatible.  The 
   old hiertable is temporariliy available as "hiertable-old" should 
   you find errors.  Also use the "treeview" instead of the "hierbox"
   widget. The "hierbox" isn't as capable and doesn't use tree data
   objects.
treeview/hiertable
   Added tagging operations similar to the "tree" command.  Attaching
   a tree to the treeview/hiertable (the -tree option) now gives you
   access to the tree's tags too.  Don't confuse this with "bindtags".
   For example, you can tag nodes with the "tree" command and operate
   on them in the treeview/hiertable widget using that tag. If you
   don't want to share tags, the -newtags option will prevent this.  
   There's an update "treeview" manual entry to describe this.
treeview/hiertable
   The "nearest" operation can report what part of the entry the pointer
   is over.  If a variable name argument is given, the variable will
   contain either "button", "label", "icon", or "".
eps/winop
   Faster image zooming and rotation (fixed-point arithmetic).

BUG FIXES
=========

vector
   Test of real number in a range is broken. Thanks to Paul Robins
   for the bug report.
treeview/hiertable
   "nearest" operation doesn't allow an optional "variable" argument.
hiertable/hierbox
   The -selectioncommand command is invoked when closing an entry 
   with no selected descendants.  Thanks to Jorge Suit Prez Ronda 
   <jsperez@bayesinf.com> for the bug report.
hiertable/hierbox    
   In single "mode", the selection anchor is not updated when the
   selection is moved via the keyboard. Thanks to Jorge Suit Prez Ronda 
   <jsperez@bayesinf.com> for the bug report.
hiertable		
   Editor overwrites memory (seen best under Windows).   
hiertable		
   The "open" and "close" operations don't check for no arguments.
hiertable
   Vertical dotted lines start on wrong y-coordinate when clipped.
hiertable
   Active button isn't clipped by column titles.
hiertable
   Column titles are still displayed and picked despite -showtitles 
   set to "no". 
hiertable
   Editor doesn't automatically select acquired text. 
hiertable
   Moving the cursor in the editor doesn't clear the selection.
hiertable
   Typing a "space" doesn't replace the selection with a space.
tree
   Traces on the same node loop infinitely.  TRACE_ACTIVE flag not 
   set/unset.
tree
   The "restore" and "restorefile" operations don't handle newlines
   in data key/values, node labels, or tags.
graph/barchart/stripchart
   Crosshairs left on screen when the mouse is pulled quicky from the 
   widget.  
graph/barchart/stripchart
   Spurious crosshairs also left on the screen if axes are reconfigured 
   (active axes).
graph/barchart/stripchart
   Image marker not updated if image is changed.
graph/barchart/stripchart
   PostScript not generated for -showvalues option. 
graph/barchart/stripchart
   PostScript not generated for errorbars.
bgexec
   No check for wrong number of arguments if switch is present.
<bltAlloc.c>
   Blt_MallocProcPtr and Blt_FreeProcPtr not declared extern in 
   bltInt.h
<bltTile.c>
   Bogus test for mask in Blt_TilePolygon routine.
<bltImage.c>
   Counter for transparent pixels wrong in Win32 version of Blt_PolygonMask.  
<bltInit.c>
   blt_version not set when dynamically loaded into wish83.exe.  
 
Note: Stub support is still missing although patches have been
      graciously provided for the 2.4q release.  This will be added as
      soon as I can get some free time.

Changes from 2.4u to 2.4v

FEATURES
========
bgexec
   New -linebuffered switch.	

        bgexec myVar -linebuffered yes -onoutput ShowLine myProg &

    This option lets you process updated data (-onerror, -onoutput, 
    -error, or -output) on a line by line basis.  Normally notifications 
    occur once for entire data block. This switch causes separate 
    notifications to made for each complete line.
bgexec
    New -decodeoutput and -decodeerror switches.
 
     bgexec myVar -decodeoutput unicode -output myOut myProg &

    Translates data from the specified encoding to UTF before passing
    it to the Tcl interpreter. Normally no translation is made (under
    Windows CR-LF conversions are made) and the raw, typically ASCII,
    characters are passed back to the Tcl interpreter.  
    Binary data can be collected with the "binary" encoding. For 
    versions using Tcl 8.1 or greater, data is returned as Tcl byte 
    array object, so you can use the "binary" command to convert it 
    as needed.

      set out [bgexec myVar -decodeoutput binary myProg]
      binary scan $myOut f values
tree
   New "dumpfile" and "restorefile" operations to "tree" command.
tree
   Extended -> syntax in tree command to use node names.  

	set data [$tree get root->"fred"->"pebbles"]
tree 
   Improved memory handling of large trees.  Pool allocators added to
   reduce overall memory consumption. 
graph/stripchart/barchart
   New -buffergraph switch.	
	.graph configure -buffergraph no
graph
   New options to fill area under curve of an element.
	
	.graph element configure line1 -areapattern solid 
	.graph element configure line2 -areapattern BLT 
graph/stripchart/barchart
   New -reduce option.

	.graph element configure line1 -abstol 0.5

   Designates error tolerance for line simplificiation. Points that 
   vary less than the given tolerance are merged into a single line 
   segment.
miscellaneous
   Can globally replace memory allocation routines by setting 
   pointers Blt_MallocProcPtr and Blt_FreeProcPtr.
winop
   New "rotate" operation lets you rotate photo images.

BUG FIXES
=========
bgexec
   Fixed a race condition that caused assertion under Windows to fail.
   When both stdout and stderr are collected, if the stdout handler
   finishes first, the memory used by read thread handler could be 
   freed before the stderr pipe was closed.
graph/stripchart/barchart
   PostScript coordinates are no longer integers (screen resolution).
graph/stripchart/barchart
   Polygon markers now clipped properly.
vector
   Vectors can't be mapped to local variables.  This was broken 
   in the 2.4r release.  Thanks to Johannes Zellner 
   <johannes@zellner.org> for the bug report.
vector
   Tcl command associated with a vector not destroyed when the vector
   is deleted.  Much thanks to Alexander Eisenhuth <stacom@topmail.de> 
   for the bug report and the example script.
drag&drop
   "drag&drop" command fails when multiple formats are specified.
    Seen in the dragdrop2.tcl demo.
spline
   Incorrectly reports the spline's x-vector to be non-monotonic.  
   Thanks to Chang Li <changl@neatware.com> for the bug report.
<pkgIndex.tcl>
   Fixed pkgIndex.tcl.in to figure out whether to load libBLT24.so
   or libBLTlite24.so when BLT is loaded, not when the package is 
   registered.  Thanks to Dr. Dieter Ruppert <ru@swb.siemens.de> for
   the bug report and fix.

Changes from 2.4t to 2.4u

BUG FIXES
=========
<./configure>
   Fixed my stupid error (missing close brace) in ./configure file.  
<Makefile.in>
   Makefile in src/shared doesn't define BLT_LIBRARY.  Thanks
   to terri@ner.com (Terri L. Fischer) for the bug report and fix. 
graph/barchart/stripchart
   graph doesn't find vector in global namespace when inside of another 
   namespace. Thanks to Julian H J Loaring <bigj@bigj.demon.co.uk> for 
   the bug report.
graph/barchart/stripchart
   Scratch buffer to small for PostScript prolog.  Thanks again to
   Julian H J Loaring <bigj@bigj.demon.co.uk> for the bug report 
   and fix. 
graph
   "bind" would fail on elements without traces (-linewidth 0).
   Thanks again to terri@ner.com (Terri L. Fischer) for the bug report.

 o Many changes to "dnd" command.  

      +	-package option is treated as a command prefix (like the 
        scrollbar), not a script.  Percent sign substitutions are
        no longer allowed.  Information is passed via key-value 
	parameters like the -onleave, -ondrop procedures. Procedure 
        must return 1 if operation was Ok, and 0 if it failed.  
  
      +	The command arguments for both the "setdata" and "getdata"
	operations have changed from an arbitrary Tcl script with
	percent sign substitutions, to a command prefix with 
	key-value arguments appended. The general form is

		procName widget args...

	where args is one of more key value pairs.

		x		Relative X-coordinate of drop or pickup.
		y		Relative Y-coordinate of drop or pickup.
		timestamp	Timestamp of transaction.
		format		Format desired.
		value		Value transfered (setdata only).

	You can use array set to parse "args".  For example:

		proc GetColor { widget args } {
		    array set info $args
	
		    puts "x-coordinate is $info(x)"
		    puts "selected format is $info(format)"

		    return [$widget cget -bg]	 	    
		}
	
      + If an -onmotion procedure is specified for the target, it is
	automatically invoked on drops before the -dropcmd is run. 
	If it returns 0, the drop is canceled.
	
      + Added ./demos/dnd2.tcl to show more complicated example.
	Just like dnd1.tcl, you need to run two of them at the same
	time to see the drag-and-drop operations.

      + Target property wasn't getting reset when changing -onmotion, 
	-onleave, etc. procedures. 
    
      + Timestamps now displayed as unsigned. 
	
   Many thanks to Tom Lane <tgl@sss.pgh.pa.us> for all his help and
   suggestions.

Changes from 2.4s to 2.4t

 o Tree command syntax changes.  Notify and trace operation now work
   as advertised and a copy operation added.  Many thanks to Matt 
   Newman <matt@sensus.org> for meticulously reviewing the command. 

 o graph "snap" operation syntax change.  Added support for generating
   Aldus metafiles and enhanced metafiles under Windows. 

	# Normal syntax.
         set image [image create photo]
	.graph snap $image

	# New additions.
	.graph snap -format emf myFile.emf ;# Enhanced metafile
	.graph snap -format wmf myFile.wmf ;# Aldus placable metafile
	.graph snap -format emf CLIPBOARD  ;# Metafile written into clipboard.

   Old width and height arguments are replaced with -width and -height 
   switches.

	.graph snap $image 500 500 			;# Old
	.graph snap -width 500 -height 500 $image	;# New 

   Thanks to Alain Zuur <a.zuur@marlab.ac.uk> for the enhancement.
  
 o Tabset/Tabnotebook -selectforeground option for tabs using wrong
   configuration option type.  Both the bug report and fix are from
   Mark E. Smith <mark@pearl.grand.gdats.com>.  Thanks.

 o graph "bind" to use closest point instead of line segment when 
   element contains only 1 point.  Thanks to Uwe Klein 
   <uwe-klein@foni.net> for the bug report and script.  

 o Hiertable tree view column has been internally renamed to 
	
	  "BLT Hiertable widgetName".  

   It was formerly the name of the widget.  Fortunately, you can
   refer to the column as "treeView" instead.  

	 .ht column configure treeView -text "View Label"
 
 o There's no ".tree" suffix anymore on the default tree created by 
   the hiertable widget.  It's now just the widget name. 

 o Many hiertable column bug fixes. Thanks to Julian H J Loaring 
   <bigj@bigj.demon.co.uk> for all the tests and reports. 

 o Rotated text displayed incorrectly under Windows 95/98 using 
   non-TrueType fonts.  A test for typetype fonts has been restored.
   Thanks to James Pakko <jpakko@ford.com> for the bug report and
   script.

   Under Windows, Non-TrueType fonts are drawn into a bitmap and 
   the bitmap is rotated.  This provides the same quality as using 
   rotated fonts for on-screen display.  Unfortunately it's much 
   poorer for higher resolution devices such as printers. The best 
   bet is to simply choose TrueType fonts if you can.

 o Improved Hiertable folder images.  Many thanks to Tom Lane 
   <tgl@sss.pgh.pa.us> for the new images. 

 o Bgexec segfaults under Windows (NT/95) if file handler is 
   deleted inside of callback.  Thanks to Chris Oliver 
   <coliver@mminternet.com> for the bug report.

 o graph segfaults if pen style range min/max are the same. 
   Thanks to Thomas Wu <twu@gene.com> for the bug report and script.

 o tabnotebook and tabset widgets would generate X11 errors if
   embedded window was resize to zero width/height.  Thanks to
   Ed Ohsone <eosn@rahul.net> for the report and the script to
   demonstrate the error.
 
Changes from 2.4r to 2.4s

 o Fixed bug in stripchart (introduced in 2.4r) allowing uninitialized
   data to be displayed.  Thanks to Dick Gooris <gooris@lucent.com> for
   the bug report.

 o AIX dynamic loading.  Actually made it work on a 4.3 AIX box.

 o Fixed -tree option in hiertable.  Would segfault if tree was not
   fully initialized first.

 o Tree insert operation syntax changed from 

 	tree0 insert $node key1 value1 key2 value2
   to
	tree0 insert $node -data { key1 value1 key2 value2 }

 o Fixed tree label operation.  Save uid instead of string.
   
 o Bug in TreeEventProc, should be node != NULL instead of node >= 0
   Thanks to Julian H J Loaring <bigj@bigj.demon.co.uk> for the
   bug report. 


What's new in 2.4?

 1. "eps" canvas item.  

    An encapsulated PostScript canvas item lets you embed an EPS file into 
    the canvas.  The "eps" item displays either a EPS preview image found 
    in the file, or a Tk image that you provide.  

 2. "hierbox" and "hiertable" widget.

    Hierarchical listbox widget. Displays a general ordered tree which 
    may be built on-the-fly or all at once.

 3. "tabset" and "tabnotebook" widget.

    Can be used either as a tab notebook or simple tabset.  Tabs can 
    be arranged in a variety of ways: multi-tiered, scrolled, and 
    attached to any of the four sides.  Tab labels can contain both 
    images and text (text can be arbitrarily rotated). Notebook pages 
    can be torn-off into separate windows and replaced later. 
    
 4. Changes to vectors.

    New features:
	
     o	Vector expressions.  The vector now has an "expr" operation
	that lets you perform math (including math library
	functions) on vectors.  There are several new functions
	(such as "max", "min", "mean" "median", "q1", "q3", "prod",
	"sum", "adev", "sdev", "skew", ...)

		vector expr { sin(x)^2 + cos(x)^2 }
		y expr { log(x) * $value }

     o	New syntax to create and destroy vectors:

		vector create x 
		vector destroy x
 
	The old syntax for creating vectors still works.

		vector x

     o	Vectors are *not* automatically deleted when their Tcl
	variable is unset anymore. This means that you can
	temporarily map vectors to variables and use them as you
	would an ordinary Tcl array (kind of like "upvar").

	    proc AddValue { vecName value } {
		 $vecName variable x
	
		 set x(++end) $value
	    }	

	There's an "-watchunset" flag to restore the old
	behavior if you need it. 

	    vector create x -watchunset yes

     o  Vectors still automatically create Tcl variables by
	default.  I'd like to change this, but it silently
	breaks lots of code, so it will stay.

    Bug fixes:

     o  Vector reallocation failed when shrinking the vector.

     o  Vector "destroy" callback made after vector was already freed.

     o  Fixed vector/scalar operations.

     o  Always store results in temporary, so not to overwrite accidently
	current vector values.
	
 5. Changes to Graph, Barchart, Stripchart widgets.

    New features:

     o 	Drop shadows for text (titles, markers, etc). Drop
	shadows improve contrast when displaying text over a
	background with similar color intensities.
   
     o  Postscript "-preview" option to generate a EPS
	PostScript preview image that can be read and
	displayed by the EPS canvas item.

     o  New "-topvariable", "-bottomvariable",
	"-leftvariable", and "-rightvariable" options.  They
	specify variables to contain the current margin
	sizes.  These variables are updated whenever the
	graph is redrawn.

     o  New "-aspect" option. Let's you maintain a particular aspect
	ratio for the the graph.

     o  Image markers can now be stretched and zoomed like
        bitmap markers.

     o  Bind operation for legend entries, markers, and elements.

	Much thanks to Julian Loaring <bigj@bigj.demon.co.uk> 
	for the idea.

     o  New "-xor" option for line markers, lets you draw the line
	by rubberbanded by XOR-ing without requiring the graph to
	be redrawn.  This can be used, for example, to select regions
	for zooming.  

	Thanks to Johannes Zellner (joze@krisal.physik.uni-karlsruhe.de) 
	for the idea.

     o  Can attach a scrollbar to an axis.  

  	    .sbar configure -command { .graph axis view y } 
	    .graph axis configure y -scrollcommand { .sbar set } 

    Bug fixes:

     o	Closest line (point) broken when using pens styles.

     o	Marker elastic coordinates were wrong.

     o	PostScript bounding box included the border of the page.

     o	Bad PostScript generated for barchart symbols with stipples.

     o	Wrong dimensions computed with postscript " -maxpect" option.

     o  Text markers fixed.

	Thanks to De Clarke for the bug report and fix.


     o  Renamed axis configuration from "-range" to "-autorange" to
	match the documentation.  

	Thanks to Brian Smith for the correction.

     o  Fixed polygon marker pick routine.

     o  Fixed active tab labels overlapping the selected tab.

     o  PostScript graph footer turned off by default.  Use -footer option
        to turn on.

	    .graph postscript configure -footer yes