Changes in CYCAS 3.90
   
- new Functions and Features:

   - Integration of some of the contributed translations (in GUI setup)
     Many thanks to Jean Michel Martinez, Frithjof Hdepohl, 
     Kaspar Spormann, and Luca Pregliasco.

   - Linux X68_64 support

   - Export 3DS: Initial support for 3D studio exports
	 (in CYCAS pro and basic only)

   - PDF compression: documents are shrinked to about 20%
     of the original size

   - Initial integration of Boolean set operations on 3D objects
     and walls using GTS (The GNU Triangulated Surface Library
     http://gts.sourceforge.net
	 
   	 - Union, Difference, and Intersection functions in 3D menu
	 
     - GTS file import and export functions

     - Limitations:
	 
     - GTS fails if 2 elements only touch each other

	 - GTS may fail on very complex geometry
	 
	 - Walls are converted to 3D objects.. there is no way back
	 
   - new Hidden Line renderer (HLR pro)
	 
	 - more robust and error free

	 - new options for styles hidden line rendering:
	   (in CYCAS pro and basic only)
	   - smoothing of rounded objects with adjustable angle
	   - support for silhouette highlightning
	   - support for dashed hidden edges

- Postscipt enhancements:
  
   - better Postscipt envelope code for print, export ps and eps
     (fixes all related print problems)

- SVG enhancements:

   - now uses px units (should fix inkscape scaling problems)

- DXF enhancements:

   - updated HEADER and TABLES sections for better dimension support

- Bugfixes:

   - Locale environment no longer overwrites numeric settings
	 (could cause crashes under some environments)

   - Paste function now works reliable in 3D view
   
   - Fix for orientation problems on 3D Sphere and 3D Tube elements

   - Fix for random rotation problems for 3D Tube elements

   - Fix for movement of dimension figures


	  

nderungen in CYCAS 3.80
   
 - neue Funktionen und Features:

   - Integration einiger GUI-Uebersetzungen (in den GUI Preferences)
     Mit vielen Dank an Jean Michel Martinez, Frithjof Hdepohl, 
     Kaspar Spormann und Luca Pregliasco.

   - Linux X68_64 unterstuetzung

   - Export 3DS: Export-Unterstuetzung von 3D studio dateien
	 (nur in CYCAS pro und basic)

   - PDF Kompression: Dokumente werden auf ca. 20% der originalen 
     Groesse komprimiert

   - Integration von 3D Boolschen Operationen fuer 3D Objekte
     und Waende mit GTS (GNU Triangulated Surface Library)
     http://gts.sourceforge.net
	 
   	 - Vereinigungs-, Subtraktions- und Verschneidungs- Funktionen
       im 3D Menue
	 
     - GTS datei Import und Export

     - Einschraenkungen:
	 
     - GTS schlaegt fehl wenn sich zwei Objekte nur beruehren

	 - GTS schlaegt manchmal fehl wenn die Objekte sehr komplex sind
	 
	 - Waende werden zu 3D Objekten konvertiert
	 
   - Neuer "Verdeckte Linien" Renderer (HLR pro)
	 
	 - Robuster und Fehlerfreier

	 - Neue Optionen fur stilisierte "Verdeckte Linien" -Grafiken
	   (nur in CYCAS pro und basic)
	   - Entfernen von Rundungs-Facetten mit einstellbarem Winkel
	   - Betonung von Silhouetten
	   - Gestrichelte verdeckte Kanten

- Postscipt Verbesserungen:
  
   - besserer Postscipt code fuer Druck- und Export- Funktionen
     (behebt alle dadurch entstandenen Druck-Probleme)

- SVG Verbesserungen:

   - Behebt Skalierungs-Probleme mit Inkscape

- DXF Verbesserungen

   - Verbesserte HEADER and TABLES Sektionen (DIMENSION elemente)

- Bugfixes:

   - Localisations Einstellungen ueberschreiben nicht laenger 
     Numerische Einstellungen (konnte zum Absturz fuehren)

   - Einfuegen-Funktion arbeitet korrekt mit 3D Elementen
   
   - Fix fuer Orientierungs-Probleme in Kugel- und Zylinder-Objekten

   - Fix fuer Rotations-Problem bei Zylindern

   - Fix for Verschiebe-Funktion von Mass-Zahlen


	  

Changes in CYCAS 3.80

 - new Functions and Features:

   - Hidden-Line: Support for 3D lines
   - Enhancements in the User interface (Text menu, Circle menu)
   - Enhanced Text editor
   - New Symbol browser for easier symbol handling
   - disabling of GTK themes
   - Adjustable accuracy for architectural dimensions
   - Shortcuts in the Project menu
   - New function: Stretching without modifing text sizes (for scale changes)
   - New function: Activation and filtering of color fillings
   - Camera change without changing layers

   - Enhancements of most 3D functions for consistent working in isometric, perspective and 
     view projections

   - Enhancements of circle, arc and ellipsis functions:
  
     - More intuitive 3P arc function
     - Parallel ellipses
     - Calculation of ellipsis intersections
     - New function: Extending arcs
     - New function: Part delete of circles, arcs and ellipses
     - Enhanced erase function
     - More intuitive entering of arcs
  
   - Enhanced DXF interface

     - Mostly complete support of DXF 2000
     - Import of DXF layer structures (in CYCAS professional only)
  
   - Enhanced POV-Ray module

     - Texture interpolation
     - Lights with adjustable shadow intensity
     - Correct texture rendering for gable walls and point edited walls

   - Bugfixes




nderungen in CYCAS 3.80

 - neue Funktionen und Features:

   - Hidden-Line Berechnung: 3D Linien werden bercksichtigt.
   - berarbeitung der Benutzeroberflche (Textmenue,Kreismenue)
   - Verbesserter Texteditor
   - Neuer Symbol-Browser zum vereinfachten Einfgen von Symbolen
   - GTK-Themes sind abschaltbar
   - Einstellbare Genauigkeit fr Architektur-Bemassung
   - Kurztasten im Projekt-Menue
   - Neue Funktion: Zerren ohne Textgrssen zu ndern (Masstabssprung)
   - Neue Funktion: Aktivieren und Filtern beim ndern von Mustern
   - Wechsel der Kamera auch wenn diese auf einer Hintergrundebene liegt

   - Erweiterung und Anpassung der meisten 3D-Funktionen fr die 
     Bearbeitung in Isometrie, Perspektive und Ansicht

   - Erweiterung der Kreis- und Bogen- und Ellipsenfunktionen:
  
     - Verbesserung der 3P-Bogen-Funktion
     - Parallelen von Ellipsen
     - Berechnung von Ellipsen-Schnittpunkten
     - Neue Funktion: Verlngern von Kreisbgen
     - Neue Funktion: Teillschen von Kreisen, Ellipsen und Bgen
     - Verbesserte Radier-Funktion
     - Verbesserung der Kreisbogen-Eingabe
  
   - Erweiterung der DXF-Schnittstelle:

     - Weitgehende Untersttzung von DXF-2000
     - Import der DXF-Layerstruktur (nur in CYCAS professional)
  
   - Erweiterung der POV-Ray-Schnittstelle:

     - Texturen werden interpoliert
     - Lichter mit einstellbarer Schatten-Intensitt
     - Korrekte Textur-Darstellung bei Giebelwnden und verzogenen Wnden

   - Bugfixes




**********************************************
**********  CHANGES 2.40 -> 3.00 *************
**********************************************	

CYCAS 3.00 is  based on  a completely new core 
module, witch greatly  improves many functions 
in the program.

New features:
- added: Up to 32 Undo and Redo steps
- added: Up to 1000 layers
- added: New Layers dialog box with lists and sets
- added: Improved grouping system
- added: Snap-to preview 
- added: Direct PDF export
- added: 3DS import
- added: Consistent support of measuring units
- added: Improved Imperial support
- added: New 3D Elements: Cone and Cut-cone
- added: Counter drawing of polygons on splines
- added: Multiline text objects with seperate text editor

Extended export functions:
- added: New POV-Ray option for alpha rendering
- added: New POV-Ray option for material scripts
- added: New DXF12 import option for 3D lines / 2D lines

Improved print and plot functions:
- added: Consistent print and plot settings dialog
- added: Automatic printer detection under Linux
- added: Predefined paper sizes
- added: Improved Postscrip Level 2 support

Other:
- many improvements and fixes




**********************************************
**********  CHANGES 2.20 -> 2.40 *************
**********************************************	

- added TrueType support via libfreetype2
- added Snap to 3D Object intersections
- added Visual feedback for snapped points
- added Selection option for visible layers
- added SVG Export
- added Automatic recognition of HTML browser
- added Load/Save of layer sets
- added Size field in object information of arcs
- added New 3D Object: Sphere
- fixed Erase function for arcs and circles
- fixed EPS Export: bounding box, endpage
- fixed Imperial input
- fixed DXF Import: Filling colors
- fixed Numeric input of text size
- fixed Umlaute in german version
- fixed Selection of rooms and patterns
- fixed Reload problem in text, dim and mat dialogs
- fixed icons and shortcuts for kde, gnome, gnome2
- fixed Attach wall now in 3D menue




**********************************************
**********  CHANGES 2.08 -> 2.20 *************
**********************************************	

- added Autobackup with setup of time interval
- added Setup of dim-accurracy
- added Tangent construction
- added Support of POV-Ray textures
- added Imperial figure input
- added Support of mouse wheel
- added Supporting program-start arguments
- added Undo for polygon input
- added Extending of walls to bevel planes
- Enhanced POV-Ray export
- New structured view menu
- Guidelines only deletable on the active layer
- Enhanced DXF export of polygons
- Enhanced element information
- Many fixes




**********************************************
**********  CHANGES 2.0 -> 2.08  *************
**********************************************	

- added errormessage if POV-Ray is missing
- added CD-Installer
- added Applink + Icon for KDE desktop
- added Applink + Icon for Gnome desktop
- added new drawings, symbols, pictures
- added colorplotting for hpgl/2
- added colorprinting
- fileversion is 208 now
- added colorfilling support for screen, ps, hpgl/2
- online help is now called via "file:".. 
- bugfix: Cycas uses "nshelp" -script to fix the "netscape-problem"
- added global ambient light for POV-Ray
- bugfix: dialog box units are now converted correctly if not in metric/m
- bugfix: pattern dialog was sometimes confused when using "2 lines"
- added boundings fuer POV-Ray export.. major speedup for renderings
- bugfix: the "hanging-x".
- bugfix: gauge sometimes displayed angles in "rad"
- bugfix: F1-F8 are working again
- line/extend now works for circles/arc
- circle/parallel now works for circles in background layer
- bugfix: linetype for hpgl/1/2 is now in correct scale
- entering polygons over circles now works for background layers
