^
, _
, or |
, and the actual label. In general
you may insert the following:
<
will place the label at the point where the actual arrow
begins, i.e., `appears from under' the base, so
$\xymatrix@1{A\ar[r]^<{+}&B}$
will typeset
>
will place the label at the point where the actual
arrow ends, i.e., `disappears below' the target, so
$\xymatrix@1{A\ar[r]^>{+}&B}$
will typeset
<<
and >>
will place the following label at a point just
a bit$\xymatrix@1{A\ar[r]^>>{+}&B}$
will typeset <
s or >
s
will move the label further in.
()
s: (0)
) to the center of the target (called (1)
)
instead of in the middle, so
$\xymatrix@1{A\ar[r]^(.3){+}&B}$
will typeset
<
or >
s, in which case
the place is computed as if the base was specified by the
<
s and target specified by the >
s. Hence
$\xymatrix@1{A\ar[r]^<(0){+}&B}$
will typeset
!{
;
}
places the label
relative to the point on the arrow where the line from the target