How do you guys think about a currency sign for magi? Examples:
I do like the Sigma with a horizontal strikethrough and that is probably the easiest to use while maintaining compatibility across multiple platforms. That makes it a logical choice imho.
In truth, I rather like just a plain capital Sigma since my mathematical brain interprets this as "the sum of" which seems appropriate in many ways. Having said that, single or twin horizontal or vertical bars carry the message of "a currency".
On keyboards, one usually finds the £ and $ symbols (for example) have a single bar, while the symbols are also often written with twin bars. Either version is instantly recognized as the currency, so I would say that either version is perfectly ok. The twin horizontal bar can be synthesized with [sigma][backspace][equals] in ASCII.
Just for fun, here's a small challenge for you. I will donate 20 XMG to the first person to post up the Sigma with a twin horizontal bar. Ready ... steady ... GO!
The code below (CSS Styling) works on all recent browsers and produces the Σ character with a double stroke.
Σ
Just make an empty text file with .html extension on your computer, copy-paste the above code and open the file with the browser.
Also an image 20x1 pixels can also be used with the folowing code to make the double stroke effect:
del {background: url('/images/the_image.gif') repeat-x left 0.72em;}
This method should be font-size independent.
See here: http://jsfiddle.net/NGLN/FtvCv/1/
Of course there are also combining unicode characters and there is a "combining double vertical stroke overlay" character (U+20E6) but there is not a combining "double horizontal stroke overlay" one.