https://manpages.ubuntu.com/manpages/xenial/man3/Tk_Fill3DRectangle.3tk.html
Ubuntu Manpage: Tk_Alloc3DBorderFromObj, Tk_Get3DBorder, Tk_Get3DBorderFromObj,
ubuntumanpagetk
https://manpages.ubuntu.com/manpages/xenial/man3/Tk_3DVerticalBevel.3tk.html
Ubuntu Manpage: Tk_Alloc3DBorderFromObj, Tk_Get3DBorder, Tk_Get3DBorderFromObj,
ubuntumanpagetk
https://manpages.ubuntu.com/manpages/xenial/man3/Tk_SetBackgroundFromBorder.3tk.html
Ubuntu Manpage: Tk_Alloc3DBorderFromObj, Tk_Get3DBorder, Tk_Get3DBorderFromObj,
ubuntumanpagetk
https://manpages.ubuntu.com/manpages/xenial/man3/Tk_Draw3DRectangle.3tk.html
Ubuntu Manpage: Tk_Alloc3DBorderFromObj, Tk_Get3DBorder, Tk_Get3DBorderFromObj,
ubuntumanpagetk