The following are a list of system permissions needed for Don Johnston tools if you are Blocking extensions by permission. 

Co:Writer Extension:

management
tabs
activeTabs
tts
ttsEngine
notifications
unlimitedStorage
webNavigation
contextMenus
webRequest
webRequestBlocking
webNavigation

Co:Writer app:

tts
storage
unlimitedStorage
contextMenus
audioCapture
videoCapture
identity
app.window.fullscreen.overrideEsc

Snap and Read Extension:

management
tabs
activeTab
tts
ttsEngine
notifications
unlimitedStorage
webNavigation
contextMenus
management
webRequest
webRequestBlocking
storage

Word Bank:

Management
tabs
activeTab
tts
ttsEngine
notifications
storage
unlimitedStorage
webNavigation
contextMenus
webRequest
webRequestBlocking
notifications

Quizbot:

activeTab
tabs
management
tts
ttsEngine
notifications
unlimitedStorage
webNavigation
contextMenus
management
webRequest
webRequestBlocking
storage

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