Canon EOS REBEL T8i Advanced User's Manual page 28

Viewfinder information display
(1)
(2)
(3)
(4)
(5)
(6)
(1) Focusing screen
(2) Aspect ratio line (1:1)
(3) Grid
(4) Spot metering circle
(5) Large Zone AF frame
(6) Electronic level
(7) < > AF point
< > Spot AF point
(8) Aspect ratio line (16:9)
(9) Area AF frame
(10) Aspect ratio line (4:3)
(11) < > Flicker detection
* The display will show only the settings currently applied.
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(7)
(8)
(9)
(10)
(11)