Multiple Underscore Logic For Typewriters
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20
In a typewriter with text storage, provision for underscoring of printed characters generally involves the use of control codes that are embedded among the codes representing a text string. A unique "begin-underscore" code indicates the point where underscoring is to begin. A unique "end underscore" code indicates the end point for underscore. During printing in the underscore mode (Fig. 1), the characters in the underscore zone are typically printed first, the printer positions where the begin and end underscore codes were encountered (denoted here as BUS and EUS, respectively) preferably being retained in storage.