Template:Overunderset/doc

This template combines the overset and underset templates into one.

The template names overunderset and underoverset are synonymous and can be used interchangeably: redirects to.

Syntax
The code is:


 * or

where:


 * 1) the first parameter is the main symbol,
 * 2) the second parameter is the symbol above the main symbol,
 * 3) the third parameter is the symbol underneath the main symbol.

Combined overset and underset
The effect of an can be achieved by combining underset followed by overset:


 * 1234567890 + $$ + 1234567890 + $$ + 1234567890

but sometimes one combination will not work, particularly when there is only one combined application of templates on a line:


 * 1234567890 + $a b a$,


 * 1234567890 + $a b a$ + 1234567890


 * 1234567890 + $a b a$,


 * 1234567890 + $a b a.

The overunderset is one way around the problem using by containing the over- and under- positions for symbols:


 * 1234567890 + + 1234567890 +$.

Reduction to overset
With the third parameter empty:


 * 1234567890 + $$ + 1234567890 + $$ + 1234567890


 * 1234567890 + $$,


 * 1234567890 + $$.

Reduction to underset
With the second parameter empty:


 * 1234567890 + $$ + 1234567890 + $$ + 1234567890


 * 1234567890 + $$,


 * 1234567890 + $$.