# The ABOVE element

**Permitted Context:** %math

**Content Model:** %math
The <ABOVE> element is used to draw a line, arrow, curly
bracket, or accent *above* the expression enclosed by this element.
Stretchy symbols should be stretched to match the width of the
enclosed expression. For example:

_____
<above>X + Y</above> giving X + Y
=====
<above sym=equals>X + Y</above> giving X + Y

You can also place an expression centered
above the line or arrow with the SUP element or its shortref form, for
example:

<above sym=cub>n(n - 1)(n - 2)&dots;(n - m + 1)</above>
<sup><text>total of m factors</text></sup>

which would be rendered as (within limits of ascii art):

total of m factors
/---------------^-------------\
n(n - 1)(n - 2) ... (n - m + 1)

### Permitted Attributes

- SYM
- An entity name for a symbol, e.g.
*cub* for a curly bracket (brace). Defaults to *line*.
The other choices are: *larr* (left arrow), *rarr* (right
arrow), *hat* and *tilde*.

**Note:** Don't include the & prefix, so
`<above sym="→">` is wrong!