Fnd_Tlbr_Button_Add

            Fnd_Tlbr_Button_Add (name; button text; icon name; method{; keystroke})

              Parameter                Type             Description
              name                     Text             Unique name for the button object
              button text              Text             Button label
              icon name                Text             Picture Library name for the icon
              method                   Text             The method to call when the button is clicked
              keystroke                Text             Command/Ctrl keyboard equivalent (optional)

            Fnd_Tlbr_Button_Add adds a new button to the toolbar. The button is always appended to the right of
            any existing toolbar buttons or dividers.
            The button name is used to identify the button when calling other Toolbar component methods. It
            should be a unique string of up to 31 characters.
            The second parameter is the text label to be displayed with the button. This label can later be changed on-
            the-fly by calling the Fnd_Tlbr_Button_Label function. This label is limited to 80 characters.
            The third parameter is the name of an icon for the new button. Any of the icons built into the Foundation
            Buttons component can be used. Your own custom icons can also be used. See the Buttons Component
            (Fnd_Bttn) chapter for the complete list of built-in icons and instructions for using custom icons.
            The fourth parameter is the name of a method or any string that will work properly with 4D’s EXECUTE
            command. This string will be executed if the button is clicked.
            For example, this code will add a button to the toolbar with a label of “Delete” and the Red X icon from
            the Buttons component. It will call the DeleteRecords method when clicked:
              Fnd_Tlbr_Button_Add ("Button1";"Delete";"Fnd_Bttn_RedX";"DeleteRecords")

            This line will have the same appearance, but will call 4D’s DELETE RECORDS command directly:
              Fnd_Tlbr_Button_Add ("DelBttn";"Delete";"Fnd_Bttn_RedX";"DELETE RECORDS([Invoices])")

            Note that although the example above may work, it is best to use 4D’s Command name function to get
            the localized command name, and to get the table name dynamically, rather than hard-coding it:
              $execute_t:=Command name(58)+"("+Table name(->[Invoices])+"])"
              Fnd_Tlbr_Button_Add ("DelBttn";"Delete";"Fnd_Bttn_RedX";$execute_t)

            You can optionally assign a key equivalent to the button. The user can then use this keyboard equivalent
            rather than use the mouse to click the button. On Macintosh, the user will hold down the Command key
            and press the specified key. On Windows, the Control key is used. This key can be any letter A-Z, any
            number 0-9, or one of these special values:
              Backspace
              Delete
              Period
              UpArrow
              DownArrow
              RightArrow
              LeftArrow
            For example, this line lets the user run the DuplicateRecord method by typing Command-D on
            Macintosh or Control-D on Windows:
              Fnd_Tlbr_Button_Add ("DupBttn";"Dupe Rec";"Fnd_Bttn_Duplicate";"DuplicateRecord";"D")

            This line lets the user delete records by typing Command-Backspace on Macintosh or Control-Backspace
            on Windows:
              Fnd_Tlbr_Button_Add ("DelBttn";"Delete";"Fnd_Bttn_RedX";"DeleteRecords";"Backspace")

            After calling this command, the Fnd_Tlbr_Redraw command should be called to update the toolbar.