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But the second solution would be the preferable one.

at first i didn't know how implement the second solution in lyx, i was pretty tired but it was enough to write to the document preamble.
thanks again, this is easier solution

thanks so much.. i used your first suggestion and it's working..
have a good time

hi,
i have a small problem. title of my section is larger then one line. because of justified alignment which is apparently not possible to change is first line of title unsightly expanded. solution of this is simple..insert a forced line break..but in content is this title of section also over two ...