Epson EB-1485Fi User Manual page 114

Control Computer Features from a Projected Screen (Computer Interactive Mode)
b
Press the [Menu] button, select the Pen/Touch menu, and then press
[Enter].
c
Select the PC Interactivity setting and press [Enter].
d
Make sure you turn off the Auto Adjust Pen Area setting and select
Manual Adj. Pen Area and press the [Enter] button.
e
Select Yes and press the [Enter] button.
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