subscript
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This is an alpha version of this book.

# subscript

## Name

subscript — A subscript (as in H2O, the molecular formula for water).

##

# Synopsis

### Mixed Content Model

    subscript ::=
    (#PCDATA|link|olink|ulink|emphasis|replaceable|symbol|
     inlinegraphic|inlinemediaobject|anchor|remark|subscript|
     superscript)*

### Attributes

Common attributes

### Parameter Entities

The following parameter entities contain subscript:

Parameter Entities
`%cptr.char.mix;` | `%docinfo.char.mix;` | `%ndxterm.char.mix;`
`%other.char.class;` | `%para.char.mix;` | `%refinline.char.mix;`
`%tbl.entry.mdl;` | `%title.char.mix;` | `%word.char.mix;`

## Description

`Subscript` identifies text that is to be displayed as a subscript when rendered.

### Processing expectations

Formatted inline. Subscripts are usually printed in a smaller font and shifted down with respect to the baseline.

### Parents

These elements contain subscript: `abbrev`, `ackno`, `acronym`, `application`, `artpagenums`, `attribution`, `authorinitials`, `bibliomisc`, `bridgehead`, `citation`, `citetitle`, `city`, `classsynopsisinfo`, `collabname`, `command`, `computeroutput`, `confdates`, `confnum`, `confsponsor`, `conftitle`, `contractnum`, `contractsponsor`, `contrib`, `corpauthor`, `corpname`, `country`, `date`, `edition`, `email`, `emphasis`, `entry`, `fax`, `firstname`, `firstterm`, `foreignphrase`, `funcparams`, `funcsynopsisinfo`, `function`, `glosssee`, `glossseealso`, `glossterm`, `holder`, `honorific`, `invpartnumber`, `isbn`, `issn`, `issuenum`, `jobtitle`, `label`, `lineage`, `lineannotation`, `link`, `literal`, `literallayout`, `lotentry`, `manvolnum`, `member`, `modespec`, `msgaud`, `olink`, `optional`, `orgdiv`, `orgname`, `otheraddr`, `othername`, `pagenums`, `para`, `phone`, `phrase`, `pob`, `postcode`, `primary`, `primaryie`, `productname`, `productnumber`, `programlisting`, `pubdate`, `publishername`, `pubsnumber`, `quote`, `refentrytitle`, `refmiscinfo`, `refpurpose`, `releaseinfo`, `remark`, `replaceable`, `revnumber`, `revremark`, `screen`, `screeninfo`, `secondary`, `secondaryie`, `see`, `seealso`, `seealsoie`, `seeie`, `seg`, `segtitle`, `seriesvolnums`, `shortaffil`, `simpara`, `state`, `street`, `subscript`, `subtitle`, `superscript`, `surname`, `synopsis`, `term`, `tertiary`, `tertiaryie`, `title`, `titleabbrev`, `tocback`, `tocentry`, `tocfront`, `trademark`, `ulink`, `userinput`, `volumenum`, `wordasword`, `year`.

### Children

The following elements occur in subscript: `anchor`, `emphasis`, `inlinegraphic`, `inlinemediaobject`, `link`, `olink`, `remark`, `replaceable`, `subscript`, `superscript`, `symbol`, `ulink`.

## See Also

`equation`, `informalequation`, `inlineequation`, `superscript`.

## Examples

    <!DOCTYPE para PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
              "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
    <para>
    Thirsty?  Have some H<subscript>2</subscript>O.
    </para>

Thirsty? Have some H2O.

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