Specifies whether to follow the named type of links when walking.
Stylesheet
If Y, links from <LINK HREF=...REL=stylesheet>
tags will be indexed as searchable content.
Note that non-stylesheet<LINK> tags will still be followed
regardless of this setting.
The default is N.
Script
If Y, Javascript links from <script src=...> tags
will be indexed as searchable content.
The default is N.
<FORM>
If Y, links from <FORM ACTION=...> tags will be indexed as
searchable content. Without the rest of the form properly filled out, such
links can often produce nuisance error pages from database-driven sites.