< How to make an image of an extinction illusion using Microsoft Word >pic.twitter.com/fFCiSM37Xa
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Select "Properties of an image" (?) (図の形式). Select "Transparency" (?) (透明度). Select "Option" (?) (図の透明度のオプション).pic.twitter.com/Tdbf62Ym6C
The default value of transparency is 0%. Change this parameter. If you change to 50%, both image are equally visible.pic.twitter.com/7GaLwt1mUt
When the transparency (of the masking image) is 20%, the hidden image is still visible. The value should be lowered further to obtain an image of the extinction illusion.pic.twitter.com/II92jaIc2D
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