I don't know about the rest of you but often I have found that I want to include a symbol when posting something to the forums and have been unable to because my keyboard does not offer it as a standard character. I found a website that has a table of all of the Standard ASCII set, HTML Entity names, ISO 10646, ISO 8879, ISO 8859-1 Latin alphabet No. 1 that is compatible with all browsers. I thought it may be useful to some people to have access to this resource since it has been useful for me.
http://ascii.cl/htmlcodes.htmThere are 192 total. So, I went ahead and included what I thought may be the most useful codes that people may want to use that may not necessarily come as a standard on all keyboards. If I left out a symbol that you think would be useful to add to the quick reference below please feel free to let me know. Otherwise, I encourage you to utilize the link above and seek out the character.
For the following you need to omit the '-' after the '&' in order to get the symbol to appear.
$ = &-#36; = Dollar sign
¢ = &-#162; OR &-cent; = Cent Sign
€ = &-#8364; OR &-euro; = Euro Sign
£ = &-#163; OR &-pound; = Pound Sign
¥ = &-#165; OR &-yen; = Yen Sign
¡ = &-#161; OR &-iexcl; = Inverted Exclamation Mark
¿ = &-#191; OR &-iquest; = Inverted Question Mark