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Vol.20 No.1 October 2003 The Journal of the British APL Association Dyalog 2003 Conference ... • Conference Report 44 • Take Care in Sweden 63 • Daintree’s CD Database 70 • “Now I Know” (Peelle) 92 • Clark on Formula Inversion 100 • Crossley’s Variable Editor 132

Contents

Editorial	Stefano Lanzavecchia	3
APL NEWS
Quick Reference Diary		5
British APL Association News
Internet Update	Bob Hoekstra	7
Sustaining Members’ News		9
APL Product Guide	Gill Smith	11
The Education Vector
Zark Newsletter Extracts   Crossword	edited by Jon Sandles	26
J-ottings 38: Decline and Rise: a Matter of Rank	Norman Thomson	37
RECENT MEETINGS Dyalog 2003 Conference
Conference Notes and Pictures	Adrian Smith	44
The Take Care System	Peter Pichler	63
ZIMMERER – Roof Design in APL	Michael Zippel	68
Using Namespaces to Manage a CD Database	John Daintree	70
TECHNICAL SECTION
Solving the “Now I Know” Problem in J	Howard Peelle	92
Towards a General Theory of Formula Inversion	Ian Clark	100
Data Compression with Dfns	Veli-Matti Jantunen	107
A Variable Editor	David Crossley	111
At Play with J: The Magical Matrix	Eugene McDonnell	122
Taking the RTF Challenge	Adrian Smith	127
R.Net: A Reverse Polish Interpreter for .Net	Richard Smith	136
Index to Advertisers		143

www.vector.org.uk > back issues