The ConTeXt manual tells me on page 237:

You can define your own buffer with:

\definebuffer[...]

... name

After this command /getbuffer and \typebuffer are available where buffer is the name of the buffer.

I do:

\definebuffer[left]

\startbuffer[left]

left\crlf

\stopbuffer

\typeleft

and it gives me the error:

! Undefined control sequence.

\typeleft ->\dodotypebuffer

                            [left][def-3]

l.92 \typeleft

then I try:

\typebuffer[left]

this gives a typeset message [file examdoc-def-2.tmp does not exist]

(file examdoc.tex being the containing tex file)

when I try

\getbuffer[left] or \getleft

nothing at all seems to happen?

Why doesn't it work according to the manual? 

Or do I misunderstand the manual completely?

Hans van der Meer