BABAPL A Software Prototype of a Programmable Pocket APL Calculator Roger Busi 3 AIIde des C~dres, 74960 - Heythet, FRANCE Permission so make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not merle or distributed for profit or commercial advam -age and that copies bear this notice and the 'lull citation on the firs1 page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a 'lee. APL'gB 7199 Rome, Italy © 1 9 9 9 ACM 1-50113-1 B1-XI99/0012..,$5.O0 Roger Busi APL Quote Quad SUBJECT APL is, like F O R T H , a powerful programming language which deserves to be better known. Despite its unusual style and its power, it remains too confidential. In m y job, I often notice that, in order to solve little problems, our PCs and their software become unfriendly, and their documentation too important. In addition, sometimes, they are out of our reach and the solution of the problem takes time ! Even if their size reduction has made a lot of progress in few years,
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