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.