The "/forumpost" page:
Show a single forum posting. The posting is shown in context with
its entire thread.  The selected posting is enclosed within
<div class='forumSel'>...</div>.  Javascript is used to move the
selected posting into view after the page loads.
Query parameters:
- name=X
 - REQUIRED. The hash of the post to display.
 - t=a
 - Automatic display mode, i.e. hierarchical for desktop and chronological for mobile. This is the default if the "t" query parameter is omitted.
 - t=c
 - Show posts in the order they were written.
 - t=h
 - Show posts using hierarchical indenting.
 - t=s
 - Show only the post specified by "name=X".
 - t=r
 - Alias for "t=c&unf&hist".
 - t=y
 - Alias for "t=s&unf&hist".
 - raw
 - Alias for "t=s&unf". Additionally, omit the border around the post, and ignore "t" and "hist".
 - unf
 - Show the original, unformatted source text.
 - hist
 - Show edit history in addition to current posts.
 
