Equations

<..equations of amsmath.sty..>+
 \NewConfigure{equations}[2]{\def\pic:equa{#1}\def\pic:equb{#2}}
 -_-_-

<..equations of amsmath.sty..>+
 \def\str:pic{\ifx \EndPicture\:UnDef
       \expandafter\Picture\pic:equa{ \pic:equb}%
    \else \let\EndPicture=\empty  \fi
    \let\halign=\TeXhalign}
 -_-_-

<..body of amsmath.sty..>+
 \def\:tempc#1{\a:eqref\o:eqref:{#1}\b:eqref}
 \NewConfigure{eqref}{2}
 -_-_-