The characters U+3008 and U+3009 are fullwidth punctuation, usually rendered with additional spacing so as to align them within em squares, as appropriate in East Asian typography.

Also, the Symbol font provides graphics that are specifically intended as components in the two-dimensional layout of mathematical expressions.

Until 2010 or so, the Unicode glyph U+221A corresponding to the square-root sign (the HTML entity is named radic and has decimal code 8730) was usually rendered with a short built-in vinculum.

The more recent renditions of the HTML radic entity (U+221A) no longer feature any vinculum and are thus more compatible with the standard graphical representation introduced in the Symbol font.

Both styles of the square-root glyph (with or without a short vinculum) have the same disembodied meaning, so the integrity of the Unicode repertoire is not compromised by this adjustment.

Full legacy support of the Symbol font is provided by major modern web browsers like Internet Explorer and Google Chrome.

That support involves a specific handling of Adobe's special encoding, which is not properly implemented in at least some versions of other browsers, including Opera, Safari and Firefox.[when?]