Comment <!-- *** --> (not displayed by the browser)
Prologue <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
Searchable <ISINDEX> (indicates a searchable index)
Prompt <ISINDEX PROMPT="***"> (text to prompt input)
Send Search <A HREF="URL?***"></a> (use a real question mark)
URL of This File <BASE HREF="URL"> (must be in header)
N2.0 Base Window Name <BASE TARGET="***">(must be in header)
Relationship <LINK REV="***" REL="***" HREF="URL"> (in header)
Meta Information <META> (must be in header)
Style Sheets <STYLE></STYLE> (not widely supported yet)
Scripts <SCRIPT></SCRIPT> (not widely supported yet)