Here you can read about form elements that can be modified in Lycia Theme Designer by applying properties to them.
Some of these elements are the graphical ones, and can be dealt with in Form Designer (form tabs, form fields and widgets, etc.) Some of them can be influenced by the 4GL code (menu buttons, message windows, etc.) Besides, there are elements added automatically or constituting parts of other elements (scroll bar, status bar, dropdown list, etc.)