a menu may be displayed combining a radial marking menu portion and a linear menu portion . item selection in the linear portion is performed by location selection using a pointing device . item selection in the marker portion is determined by the pattern of a stroke made by the pointing device with the system ignoring linear menu items across which the stoke completely passes . linear menu items may be non - hierarchically related to the radial items . linear and radial portions may be simultaneously produced on a display based on a single input event .