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# 5.3. abstract Filter

## Interface

The general syntax is:

      !block abstract
      ...
      !endblock

See Understanding Filter Interfaces, if necessary.

## Description

The abstract filter is used to specify an abstract for a technical paper. This typically implies:

- for PostScript, the text is italics and indented from both margins
- for HTML, the text is given an appropriate heading.

## Examples

A typical paper starts like this:

    !init OPT_STYLE="paper"
    !define DOC_NAME "Internet Management Tools"
    !define DOC_AUTHOR "I. M. Wise"
    !build_title

    !block abstract
    The internet is out of control. This paper ...

    # more paragraphs go here

    !endblock

    H1: Introduction

    # The interesting stuff goes here