Apache Door (p. 12)

$$\Circled{1}\ \underline{O}.A$$

$$\Circled{2}\ 2\infty \longrightarrow W\ \textrm{(over)}$$

$$\Circled{3}\ \overrightarrow{1}(\und... ...erline{1f})\ \topinset{=}{\ensuremath{\mid}}{3pt}{0pt}\ \ensuremath{\char93 }\$$

$$\Circled{4'}\ \overleftarrow{1\infty ^{(2)}}(Wn) : \underrightarrow{1 \infty ^{(2)}}(Wf) : \overleftarrow{1 \infty ^{(2)}} \to 1\$$

$$\Circled{5}\ \ensuremath{\Box}W\ \textrm{ and rub hands together magically}\ :\ \ensuremath{\textrm{I}}\$$

The move $\Circled{4'}$ is non-traditional. It is loop-move equivalent to the Fourth move in Jayne's construction. Traditionally, this is accomplished by positioning the hands so that all the strings of the figure run between $R1$ and $R2$ and then lifting off $1\infty ^{(2)}$ carrying them over this mass of strings and then resetting them on $1$.