An echo removing apparatus for reducing the echo caused by sound returning from a speaker to a microphone of a small-sized communication terminal, such as a portable telephone. Broadly contemplated herein the \u201ctiling\u201d of a collection of logically adjacent individual graphical desktops in a virtual desktop. The truncated circular element has an orifice extending perpendicularly through the center of the truncated circular element. In addition the invention concerns the use of such a filter for the reduction of the COtar ratio as a function of the filter ventilation. The digital broadcasting receiver may receive at least one input corresponding to selection of the identifier for selection of a desired character, wherein the desired character and at least one other character in a different region are displayed differently on the screen. A portion of the service loop bends when a tracking section of the actuator arm rotates around a tracking axis while a portion of the flex circuit twists when the focus section of the actuator arm rotates around a focus axis.