Flat When this style is set, the Radio-Button control has no 3-D effect. When the mouse pointer is moved over the Radio-Button control, it is highlighted. Example - Define a radio button with flat style screen section. ... 03 screen-1-rb-2 Radio-Button line 20.6 column 21.7 size 10.9 cells lines 5.4 cells font Calibri-10v00 help-id 3020 id 5 background-high flat title "Option 2" .