Drawing a chemical structure    A. Drawing any atom: selecting the atom by clicking on the tab on the left hand side of the drawing area, then clicking on the drawing area.    B. Drawing single, double or triple bounds: after an atom is drawn (A), keeping holding the mouse and dragging to get the single bound. Clinking once or twice on a single bound to get a double or triple bound.    C. Adding a charge to an atom: clicking on the tab "Charge Plus" or "Charge Minus" on top of the drawing area, then clicking on the atom that you want to add the charge to.    D. Clearing: clicking on the tab "Clear" on top of the drawing area.    E. Deleting any part from the drawing area: clicking on the tab "Dele" on top of the drawing area, then clinking on the part that you want to delete.    F. Undoing: clicking on the tab "Undo" on top of the drawing area.    G. Moving a part: clicking on the tab "Move" on top of the drawing area, then clicking on the component you want to move and dragging it to wherever you like.    H. Zooming in and out: clicking on the tab "Zoom In" or "Zoom Out" on top of the drawing area.    I. Using the template: a. Clicking on the tab "Tem" on top of the drawing area, a new window "Templates" will be opened. b. Choosing the type of the structure by clicking on the left hand side of that window. c. Moving the cursor on the structure that you want and clicking on it when the bound becomes red or the atom appears. d. Clicking on the drawing area, the structure will be drawn.