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+If you press and hold some setting it becomes default one.
+
+Also, in settings and menus you also can press and hold setting name, etc to get additional info, help, current and default values, etc (depending on setting).
+
+More info about this could be found here:
+[Show current and default values in config dialog (epub)](https://github.com/koreader/koreader/pull/3952)
+[Long press on Open last document shows filename to open](https://github.com/koreader/koreader/pull/3967)
+[TouchMenu: added hook to show help text on long-press](https://github.com/koreader/koreader/pull/3980)
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