From http://www.w3schools.com (Copyright Refsnes Data)

XSL-FO bidi-override Object

Definition and Usage

The <fo:bidi-override> object is used to override the default Unicode BIDI direction for different scripts in mixed-language documents.

This object forces a string to be written in a specific direction.

Syntax

<fo:bidi-override>
  <!--
	Contents:(#PCDATA|bidi-override|
	character|external-graphic|
	instream-foreign-object|inline|
	inline-container|leader|page-number|
	page-number-citation|basic-link|
	multi-toggle|block|block-container|
	table-and-caption|table|list-block)*
  -->
</fo:bidi-override>

Properties

Property [A-P]	Property [Q-Z]
azimuth	relative-position
bottom	richness
color	right
cue-after	score-spaces
cue-before	speak
direction	speak-header
elevation	speak-numeral
font-family	speak-punctuation
font-selection-strategy	speech-rate
font-size	stress
font-size-adjust	top
font-stretch	unicode-bidi
font-style	voice-family
font-variant	volume
font-weight	word-spacing
id
left
letter-spacing
line-height
pause-after
pause-before
pitch
pitch-range
play-during