Typically, coke-oven gas is obtained from a battery comprising a number of narrow, vertical chambers, or ovens (0.5m wide, 5m high and 12m long) built of silica brick that are separated by heating ducts, such that heat is transmitted to the coal through both sides of the chamber walls.
ISO keyboard symbol for âControlâ. In computing, a Control key is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, +); similar to the Shift key, the Control key rarely performs any function when pressed by itself.
1 The keyboard LEDs (Caps Lock, Scroll Lock and Num Lock) reflect the status of the computer being controlled. 2  Mirror input-Broadcast mouse gestures and/or keyboard input to all computers simultaneously. 3  Keyboard macros-record a sequence of keystrokes that can then be run by hotkey.