Do not use a border for other controls such as labels. Normally you should not exceed 50 items. Buttons and MDI sheets Do not place Command Buttons on MDI sheets. Use menu items and toolbars instead. Keyboard support Provide keyboard access to every editable or selectable control in a window.
Colors Use color judiciously and consistently in an application.
It is most effective for providing emphasis to portions of a Windows. Where possible, use color defaults so that the user's Window's settings apply. Fonts Limit the number of fonts to one or two. Keep font size large enough to be easily readable and use a very limited number of different font sizes. Modality Use non-modal windows whenever possible to give the user maximum control over the interface.