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A shallow open-topped bracket standing for the space character.
The glyph ␣ makes a space visible where one has to be shown — in keyboard legends, in editors displaying whitespace, and in documentation of formats where a space is significant.
Encoded as U+2423 OPEN BOX, the character set aside for making a space visible in print.
Contexts: Software
Stands for the space bar in keyboard legends and shortcut notation, and marks a literal space in editors that display whitespace.
Contexts: Software
A horizontal line with a short upright stroke rising at each end, forming a shallow open-topped box like a wide letter U with square corners.
Both are used in software contexts.