X header in postings

Hello all,

is it possible in 'slrn' that it expands variables in the headers like
for example 'mutt'?

For example I have in my 'muttrc':

my_hdr X-Operating-System: Debian GNU/`uname -s` `cat /etc/debian_version` `uname -r`

You can see above in my headers that 'mutt' expands the variables.

When I do the same in my 'slrnrc' nothing happens and only a copy of the
line is in the headerlines.

TIA Michael

-- 
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dollars are no happier than people with nine million dollars.
		-Hobart Brown

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