[Openmcl-devel] Hemlock to Cocoa interface docs?

[Ron Garret]

Is there any documentation about how Hemlock interfaces to Cocoa?  I'm  
trying to do some editor customization by moving buffer marks around  
using the published Hemlock interface commands, but that seems to  
produce a disconnect between the apparent state of the Hemlock buffer  
and the display.  For example, if I do this:

(hi::form-offset (hi::buffer-point some-buffer) 1)

that will move the buffer point forward by one sexpr, but the cursor  
is still displayed in its old position until after the next keystroke.

Thanks,
rg