Lost section markers in libre offe writer

hi,
When you insert a section it is usually indicated by 2 grey lines. one at the beginning and one at the end of a section. this indication has been turned off. so now its hard to see is my tekst is inside an certain section.
Does someone know how to turn this on and off

2024-03-21 11 12 26

Version: 24.2.1.2 (x86) / LibreOffice Community
Build ID: db4def46b0453cc22e2d0305797cf981b68ef5ac
CPU threads: 8; OS: Windows 10.0 Build 22631; UI render: Skia/Raster; VCL: win
Locale: en-CA (de_DE); UI: en-US
Calc: threaded

thanks for the reply.