Reduce horizontal space in the editor between text / folder?

How can one reduce the horizontal space in the editor between 11111, 22222 und 3333:

And how can one hide the dashed lines?

Hello Fant,
You need tools / Options / Editor Once there, look on the right of the box for ‘Editor Margins’ reducing this will reduce the space between documents in Scrivening mode.

Hello broadsides,

Many thanks. Oops, just have been there and missed it, yes, found it now.

Great, many thanks again