Association of default directions to associated information
rel: used for the rel attribute
accesskey: used for the accesskey attribute
example: Section number corresponding to the example used in the About special
         output unit to show which section the direction links to
text converted: direction text in a few words already converted to HTML
text to_convert string: direction text in a few words as Texinfo code
description converted: elaborate description of the direction already converted to HTML
description to_convert string: elaborate description of the direction as Texinfo code
button converted: direction short name typically used for buttons already converted to HTML
button to_convert string: direction short name typically used for buttons as Texinfo code
Either 'converted' or 'to_convert string' should be given not both

direction|rel|accesskey|example|text converted|text to_convert string|description converted|description to_convert string|button converted|button to_convert string|
First|||1.| ${bar}&lt; |||First section in reading order||First|
Top|start|| $html_default_entity_nbsp ||Top||Cover (top) of document||Top|
Index|index|| $html_default_entity_nbsp ||Index||Index||Index|
Last|||1.2.4| &gt;${bar} |||Last section in reading order||Last|
Space|||| $html_default_entity_nbsp |||| ||
This|||1.2.3||current||Current section||This|
Forward|next|n|1.2.4| &gt; |||Next section in reading order||Forward|
Back|prev|p|1.2.2| &lt; |||Previous section in reading order||Back|
FastForward|||2| &gt;&gt; |||Next chapter||FastForward|
FastBack|||1| &lt;&lt; |||Beginning of this chapter or previous chapter||FastBack|
Next|next|n|1.2.4||Next||Next section on same level||Next|
Prev|prev|p|1.2.2||Prev||Previous section on same level||Prev|
Up|up|u|1.2|| Up ||Up section||Up|
NodeNext|next|n|1.2.4||Next||Next node||NodeNext|
NodePrev|prev|p|1.2.2||Previous||Previous node||NodePrev|
NodeUp|up|u|1.2||Up||Up node||NodeUp|
NodeForward|||1.2.4||Forward node||Next node in node reading order||NodeForward|
NodeBack|||1.2.2||Back node||Previous node in node reading order||NodeBack|
PrevFile|prev|| $html_default_entity_nbsp ||Previous file||Back section in previous file||PrevFile|
NextFile|next|| $html_default_entity_nbsp ||Next file||Forward section in next file||NextFile|
Contents|contents|| $html_default_entity_nbsp ||Contents||Table of contents||Contents|
Overview||| $html_default_entity_nbsp ||Overview||Short table of contents||Overview|
About|help|| $html_default_entity_nbsp | ? |||About (help)||About|