Here you can turn/off the template types display for ALL your presets.
Once disabled here your presets stop displaying the disabled type in ALL your template shops. So if your template script generated in Display templates on your site does not display a certain template type, please, make sure you do not have this type disabled in Block Templates by Types.
This option is just to manage ALL template types display in one place (for those who, for instance, offer Joomla templates only). All template types are turned on by default.
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