Sometimes you're in a situation where you have a large number of pages you want to launch at the same time. Or perhaps you've decided to allow commenting on your published pages? In any case, with bulk editing you can change settings on multiple pages at the same time. This saves you time and effort.
Go to Pages and use the filter or the search functionality to find all the pages you want to edit.
Click the Bulk edit current selection button.
Set all the settings in the editing window that opens. If you see the word 'false', that simply means that the setting has not been set yet. Similarly, 'true' means a setting was set (e.g. a switch was turned on). You do not need to click anything to save the changes you have made, simply close the window when you are ready.