@cmd('<STR_LIT>', options='<STR_LIT>')<EOL>def split_window(pymux, variables):
executable = variables['<STR_LIT>']<EOL>start_directory = variables['<STR_LIT>']<EOL>pymux.add_process(executable, vsplit=variables['<STR_LIT>'],<EOL>start_directory=start_directory)<EOL>
Split horizontally or vertically.