LyX ⇒ Margin Problems in LyX

[Ben85]

Hello everybody,
I hope you are enjoying the day.

I am new to LyX, and having problems with the margins.

I have set the margin at a fixed number according to Document --> Settings --> Page margins.

BUT, the problem is, if i make a table that is clearly to wide, then it overlaps the margin, so a great part of the table is not included in the document. This is also the case, if I submit a picture.

Is there a way so that lyx knows that is has to force tables to stay inside margins?

Wbr Benjamin