-Meaningful texts are provided instead of commands in File menu (e.g. restore->Load Shape (restore))
-tk_getOpenFile is used in "open file" dialogs
-tk_chooseDirectory is used in "change directory" dialog
-Added menu "Help" with submenus "System info", "Commands", "About", "User Guide"
-Added menu "Samples" with submenu "View samples"
-Added menu "Load" with submenus "pload <Module>"
New sample created for ray tracing in DRAW: samples/tcl/raytrace.tcl, rendering OCCT bottle with glass on a rectangular table, with shadows and reflections (if OpenCL is available). Sample bottle.tcl retains only modeling part.