One of the most vocal critics of abstract expressionism at the time was New York Times art critic John Canaday. Meyer Schapiro and Leo Steinberg along with Clement Greenberg and Harold Rosenberg were important art historians of the post-war era who voiced support for abstract expressionism.
Keyboards should be of appropriate size and key-spacing to accommodate most users. Generally, the horizontal spacing between the centers of two keys should be 0.71-0.75 inches (18-19 mm) and the vertical spacing should be between 0.71-0.82 inches (18-21 mm) (Figure 9).
Install out of the reach of children at a minimum height of 5 feet (1.5 m). Secure keypad to a. smooth surface. Mount the keypad out of the path of the moving garage door, but within sight of it. (4 (10 cm) clearance is needed for the cover.)