>>> "IR" == Ihor Radchenko <yantar92@gmail.com> writes:

> Uwe Brauer <oub@mat.ucm.es> writes:
>> It seems that I did not check this carefully enough. Indeed, if I mark a
>> region and run the export function, only the active region will be
>> exported. The docstring of that function is, however, not that clear
>> about it.

> Could you please clarify which part of the function docstring was not
> clear?

Well
,----
| 
| org-export-dispatch is an interactive compiled Lisp function in
| ‘ox.el’.
| 
| (org-export-dispatch &optional ARG)
| 
| Export dispatcher for Org mode.
| 
| It provides an access to common export related tasks in a buffer.
| Its interface comes in two flavors: standard and expert.
| 
| While both share the same set of bindings, only the former
| displays the valid keys associations in a dedicated buffer.
| Scrolling (resp. line-wise motion) in this buffer is done with
| SPC and DEL (resp. C-n and C-p) keys.
| 
| Set variable ‘org-export-dispatch-use-expert-ui’ to switch to one
| flavor or the other.
| 
| When ARG is ‘C-u’, repeat the last export action, with the same
| set of options used back then, on the current buffer.
| 
| When ARG is ‘C-u C-u’, display the asynchronous export stack.
`----

Does not mention, that a selected region gets exported.