To change a splith container into a splitv container, use either "layout
splitv" or "layout toggle split". The latter command is used in the
- default config as mod+l (formerly "layout default"). In case you have
+ default config as mod+e (formerly "layout default"). In case you have
"layout default" in your config file, it is recommended to just replace
it by "layout toggle split", which will work as "layout default" did
before when pressing it once, but toggle between horizontal/vertical