COMBINING ENCLOSING SQUARE is one of the 48 characters in the Combining Diacritical Marks for Symbols Unicode subset.
The image below shows how the COMBINING ENCLOSING SQUARE symbol looks like in some of the most complete UTF-8 fonts: Code2000, Sun-ExtA, WenQuanYi Zen Hei and GNU Unifont. If the font in which this web site is displayed does not contain the COMBINING ENCLOSING SQUARE symbol, you can use the image below to get an idea of what it should look like.
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