Pane.split_window

target (int | str | None) #

attach (bool) # – Attach / select pane after creation.

start_directory (StrPath | None) # – specifies the working directory in which the new pane is created.

vertical (bool) # – split vertically

shell (str | None) #

size (str | int | None) #

percent (int | None) # – percentage to occupy with respect to current pane

# deprecated #

environment (dict[str, str] | None) # – Environmental variables for new pane. Passthrough to -e.