Although edit extended highlighting provides powerful features (such as language sensitive color), it might require an unacceptable amount of CPU time system wide. To disable the feature, change the value of the keyword DEFAULT_EDIT_DISPLAY in the ISPF configuration table to a value of 0 or 1.

To completely disable extended highlighting, even for applications that use their own edit panels, set the value of keyword ALLOW_EDIT_HIGHLIGHTING in the ISPF configuration table to NO. See The ISPF Configuration Table for more information about the ISPF configuration table.