Beamer > blue line at left of frame > how to get rid of it

Wolfgang Engelmann engelmann at
Sat Jan 11 14:46:10 UTC 2020

Am 11.01.20 um 15:35 schrieb Wolfgang Engelmann:
> Am 11.01.20 um 11:52 schrieb Jürgen Spitzmüller:
>> Am Samstag, den 11.01.2020, 11:48 +0100 schrieb Jürgen Spitzmüller:
>>>> I somehow managed to get a blue line at the left of a frame
>>>> How do I get rid of it? Whatever I try it stays or the muddle
>>> becomes
>>>> worse
>>> You can't get rid of it. As with any other environment, this tells
>>> you
>>> what is contained ("nested") in the current frame.
>> You probably talk about something different. Please post a minimal
>> example.
>> Jürgen
> Jürgen, I am completely stuck. If I change something in my beamer 
> document, e.g. to reduce it to a minimal example, I get these blue 
> markings or crossed out text allover. Could I send it to you privately 
> as an archive file? It is, however, 1.8 MB due to the graphics 
> included. Otherwise I have to construct the presentation anew, but I 
> would really like to know what happened and why I can' practically do 
> anything now.
> Wolfgang
I just noted, that I can't get the >document>settings anymore (the page 
just stays blank), not only for the document in question, but for all 
other documents.

Should I remove some .xx file and start lyx anew?


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