sdx and tclkit question

Someone was asking, over on http://wiki.tcl.tk/, about manipulating
starkits without using sdx. So I thought "well, let's just sdx unwrap
sdx and see about that". And sdx unwrapped just fine.

As I started looking through the file, I noticed a doc/sdx.tkd file.
Oh, I thought, there's some doc. So I tried to remember how to display
these - sdx without arguments didn't bring up the display.

So I tried:

$ tclkit ./sdx.tkd
invalid command name "LJ"
    while executing
"LJ"
    (file "./sdx.tkd" line 1)
$ wikit.kit sdx.tkd
body object for proc attached to frame is not a byte code type
Abort(coredump)
and
$ $ ./sdx.tkd
ksh: ./sdx.tkd: cannot execute
 (even though I have the permissions set).

So, perhaps this isn't a hypertext wiki system?

Anyone know?