Volume 6, No.1 July 1989

• Numbers and Bases, Alan Sykes, p.31
• The CIPS APL Toolkit (review), Jonathan Barman, p.51
• Printing APL Matrices, Jerry Brennan, p.64
• Personal Construct Analysis in APL, Mike Williams, p.73
• Error Trapping Tutorial for APL*PLUS, David Ziemann, p.91
• Error Trapping Tutorial for APL.68000, David Eastwood, p.96
• Error Trapping Tutorial in Dyalog APL, Pauline Brand, p.100
• A Direct Definition Handler, David Ziemann, p.110
• Semantic Class and Arrays of Functions, David Piper, p.118
• APL Printing from APL.68000, Iain Hayward, p.127