Clean up split pane guide

visidata/guides/SplitpaneGuide.md

@@ -1,17 +1,15 @@
 # Split VisiData into two panes
 
-Use split panes to view two sheets at once, or to provide a second view of the same sheet.
-
-[:keys]Shift+Z[/] is the split pane suffix.
+Use split panes to view two sheets at once.
 
 ## Open and Close a new split
 
 - {help.commands.splitwin_half}
 - {help.commands.splitwin_close}
+- {help.commands.splitwin_input}
 
 ## Modify the split plane view
 
 - {help.commands.splitwin_swap}
+- Additionally, click on the inactive pane with the mouse to jump to it.
 - {help.commands.splitwin_swap_pane}
-
-- {help.commands.splitwin_input}