jit-lock.el functions & variables appear undocumented.

[RGB]

I get "Not documented" when doing C-h v  or C-h f on variables or functions 
defined in jit-lock.el.
Other doc strings I looked at appear fine.
I didn't see any errors in the build process that might account for this.

In GNU Emacs 22.0.50.1 (i386-msvc-nt5.1.2600)
of 2005-12-29 on LD1
X server distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-msvc (12.00)'

-------------------
jit-lock-chunk-size is a variable defined in `jit-lock.el'.
Its value is 10000

Documentation:
Not documented as a variable.

You can customize this variable.

-------------------
jit-lock-functions is a variable defined in `jit-lock.el'.
Its value is 
(font-lock-fontify-region)

Local in buffer jit-lock.el; global value is nil
Automatically becomes buffer-local when set in any fashion.

Documentation:
Not documented as a variable.

[back]
-------------------
jit-lock-mode is a compiled Lisp function in `jit-lock.el'.
(jit-lock-mode arg)

Not documented.

[back]