User:Mjb/Phonorecord copyright symbol

℗

The phonorecord copyright symbol is ℗ (U+2117), not ⓟ (U+24C5).

The regular copyright symbol is © (U+00A9).

Fonts on my system that contain ℗

Font	7pt	8pt	9pt	10pt	11pt	12pt	13pt	14pt	16pt	18pt
Arial Unicode MS	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
Lucida Sans Unicode	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
MS Gothic	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
MS Mincho	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
MS PGothic	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
MS PMincho	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
MS UI Gothic	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©
MS Reference Sans Serif	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©	℗©

Analysis

When the requested font is not available, I believe Firefox selects the first font, in alphabetical order, that contains the glyphs. So in my case it uses Arial Unicode MS for the missing fonts.

On Windows XP with ClearType on, Lucida Sans Unicode looks great. With standard smoothing, however, at some point sizes the hinting causes the P to be off-center within the circle. MS Reference Sans Serif does better when ClearType is off. I haven't seen what it does with ClearType on.

MS Gothic / MS PGothic / MS Mincho / MS PMincho have no hinting or smoothing, so they're basically useless.

Availability

Lucida Sans Unicode should be available on all Windows 98, 2000, XP systems. Not on Windows ME. Server 2003 and Vista status unknown.

Lucida Grande is the equivalent of Lucida Sans Unicode on Mac OS X.

MS Reference Sans Serif will only be present if Encarta or Office 2007 is installed.