You can also use ASCII charactors with Alt key combinations:
Hold Alt, type the number, and release.
Here are a few that may be of interest. They do not show up in HTML format, so I won't display them here.
Alt-248, Alt-237, Alt-235
Alt-234, Alt-233, Alt-232
Alt-231, Alt-230, Alt-229
This is a little quicker for frequently used symbols.
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