Enabled
This property assumes a value of "0" if the Split-Pane control is disabled, "1" if it is enabled.
When the Split-Pane is disabled, all the enabled controls inside are disabled as well.
When the Split-Pane is enabled, all the controls inside that don't have their Enabled property set to 0 are enabled as well.
 
Example - Modify a split pane to disable it
procedure division.
...
  modify screen-1-sp-1 enabled 0
...