Errata for Cliff's text Fractals, Visualization and J, 2nd Edition.
On page 2-37 in Figure 2.1.1. The composition tree for x f&g y is incorrect. The left "g" should have only x as its argument, the right "g" should have only y as its argument.
On page 2-39 on the first line after Figure 2.1.3 caption. The second appearance of "require" should be part of the side comment, not the J command.
On Page 2-41 on the 6th line from the bottom. "WINSIZE" should be "WINSHAPE".
On page 2-49 on the 5th line from the bottom. The definition of tri1 is missing a trailing "]". It should read tri1=: 2r3&*@[ + 1r3&*@]
On page 2-54 on the 5th line from the bottom. The equation t = theta should be t+theta.
On page 2-69 in the equation defining h(x). The large parentheses inside the square root of that equation should not be there.