George Duke's comments interpret two- and three‐square leaps as along radial lines. It's not clear to me, however, esp. given the talk of the tarantula being ‘easily most powerful’ and of ‘smothering’ towards the end of the page, that it's not referring to oblique leaps as well, making the Mantis and Waterbugs WFNAD's rather than WFAD's and the Tarantulas full (and indeed very powerful) 3‐square area‐leapers.
George Duke's comments interpret two- and three‐square leaps as along radial lines. It's not clear to me, however, esp. given the talk of the tarantula being ‘easily most powerful’ and of ‘smothering’ towards the end of the page, that it's not referring to oblique leaps as well, making the Mantis and Waterbugs WFNAD's rather than WFAD's and the Tarantulas full (and indeed very powerful) 3‐square area‐leapers.