Canon EOS REBEL T7I Basic Instruction Manual page 49

Sample Screens

<C>: Guided
<f>: Guided
In Creative Zone modes, when [Guided] is set, only the functions particular
to the set shooting mode are displayed on the Quick Control screen. Note
that items that cannot be set from the Quick Control screen when [Guided]
is selected can be set via the menu screen (p.55).
3 Setting the Screen Display Level
<C>: Standard
<f>: Standard
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