[Zope] Help STX in UTF-8

[Vlada Macek]

I registered the help directory using

    context.registerHelp(directory='help')

in my product's __init__.py. Then I placed UTF-8 encoded STX file in my
language there, but the help via ZMI is displayed with garbled UTF-8
chars. It's unreadable, but it is not the matter of browser's Display
encoding switch.

It's Zope 2.7.5. What can I do to display the file correctly?

-- 

\//\/\
(Sometimes credited as 1494 F8DD 6379 4CD7 E7E3 1FC9 D750 4243 1F05 9424.)