Extended mode. Using the cassette recorder

Abstract

Some of the commands used in this lesson require the computer to be in extended mode. This is because we need to use some of the green and red words written above and below the keys. For example, we will need VERIFY, written in red below key R, and LLIST, written in green above key V. The computer is put into extended mode by pressing CAPS SHIFT and SYMBOL SHIFT at the same time which changes the flashing cursor to an E. Once in extended mode any word in green above a key can be obtained; for example, pressing key A will produce READ. To obtain the red words below the keys SYMBOL SHIFT has to be pressed again at the same time as the required key; for example, SYMBOL SHIFT and key X will produce INK.