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# 1.5. Document styles

## 1.5.1. Changing the style

The general style (or type) of a document can be changed by initialising the OPT_STYLE variable on the top line of a document. For example:

       !init OPT_STYLE="manual"

Alternatively, sdf's -s option can be used. For example:

       sdf -2ps -smanual mydoc

Note: The -s option overrides the init macro setting.

## 1.5.2. Available styles

The available document styles, grouped by style category, are:

Style | Purpose
General: |
document | a normal document
manual | a manual
paper | a technical paper
Administration: |
admin | generic administration document
fax | a fascimile
memo | a memorandum
newslttr | a newsletter
minutes | minutes of a meeting
Miscellaneous: |
listing | a source code listing

## 1.5.3. Building a title

Each style category has a different way of building a title section:

- general styles use the build_title macro
- administration styles use the title filter
- miscellaneous styles do not have a title.

## 1.5.4. Creating new styles

It is relatively simple to create new styles by inheriting details from an existing one.

Refer to the SDF Guru Guide for details.