open/close doc behaviour

[Harald Lichtenstein]

Hello,

I have a somehow weird behaviour when closing resp. opening a LyX-file.
I don't know, when it happens either when closing (saving) or opening.
Anyhow, when I usully save a doc and close LyX, then after opening there appears
always at the end of the first line a '16' in english language (it is underlined blue).
This happens for all my docs.

Where does it come from and how do I get rid of it?

Many thanks in advance
-- 
Harald Lichtenstein