# Filter Attributes

When you set a filter in Paligo, there are many different types of filter you can use. Some are defined by the DocBook standard and some are custom filters that we have created for Paligo.

The following table shows the filters you can use:

Filter attribute

Source

Description

arch

DocBook

Filter by computer or chip architecture.

audience

DocBook

Filter the content based on the intended users, for example, internal staff or customers. You could use audience for the knowledge level too, such as beginner or expert. But there is a userlevel attribute specifically for that, so can use audience or userlevel, but it is important to be consistent.

condition

DocBook

This is a general purpose filter attribute. Use this filter if the other filters do not meet your requirements.

conformance

DocBook

Filter by conformance standards.

os

DocBook

Filter by operating system, for example, Windows.

revision

DocBook

Filter by publication revision, for example, v.3.1.

security

DocBook

Filter by security level, for example, Low.

userlevel

DocBook

Filter by knowledge level of the intended audience, for example, expert.

vendor

DocBook

Filter by product provider, such as a manufacturer or seller.

outputformat

DocBook

Filter by the type of output, for example PDF.

xinfo:product

Paligo

Filter by product name or model.

xinfo:country

Paligo

Filter by the country that the documentation is designed for, for example, USA.

xinfo:market

Paligo

This is similar to xinfo:country except that it is less geographically rigid, for example, you can filter for the Asia market or the North America market.

xinfo:version

Paligo

Filter by version. You can use this in combination with the version management features of Paligo, but this is not a requirement. The usage is up to you.

xinfo:proglang

Paligo

Filter by programming language or to publish to API style "on-the-fly" filtering HTML5.

xml:lang

DocBook

Filter by natural language, for example, filter Swedish content. This filter attribute is a special case, as there is a different process for using language filters. To find out more, see Filter by Language.

To find out how to use filters in your content, see Filter Block Elements in a Topic , Filter Topics in a Publication, and Filter by Language.