How do you visually represent a language?
There is no natural graphical representation for a language. The only acceptable icon for a language is its two letter code as it is used in the Windows standard language toolbar. Even with this icon, it is highly recommended to put the language name in plain text, preferably in its native form.
Do languages have flags?
Flags representing languages? While many languages naturally can be indicated by one or another national flag or in some cases a regional flag, for some other languages no such flag is readily at hand.