- Editorial, John Jacob, p.3
- Chairman’s Report October 2012 , Paul Grosvenor, p.14
- BAA AGM Minutes 2012, Chris Hogan, p.16
- BAA London, Phil Last, p.18
- BAA Moot 2012 , Phil Last, p.20
- Three blind mice, Paul Grosvenor, p.24
- Our first steps into the world APL, James Greeley, Sam Gutsell & Shaquil Sidiki, p.26
- User commands in Dyalog, Dan Baronet, p.30
- Public user commands in Dyalog APL, Dan Baronet, p.41
- ⎕S and ⎕R, Dan Baronet, p.61
- Bayesian financial dynamic linear modeling in APL, Devon McCormick, p.72
- The “88 Hats” puzzle, Roger Hui, p.84
- Function design, Kai Jaeger, p.90
- Backgammon tools in J: Two-sided bearoff probabilities, Howard A. Peelle, p.104
- Savitzky-Golay interpolation for smoothing values and derivatives, David Porter & Cliff Reiter, p.107
