In PnP D&D the only way you could read a sign or parchment was to have this Proficancy but I only played 2nd Edition, in third is this the same?

In the game I think it would be a good addition. so if you dont have this all words appear as symbols  and you have to go to a scribe or another player who does have Reading/Writing in order to find out what a letter says.

What to you think?

-Open your mind for a different view-

Depends on the language, but if you have a low intelligence you cannot read or write your native language.

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Roleplaying Game: A game in which you can effectively play the role of your character and make decisisions that have a meaningful and lasting effect on the world in which you play.

Yes!

Ideally all ''foreign'' languages should be used for when mobs speak, unless you learn that language then it can then be in english.  I would find it funny to encounter a few mobs that use french and recognize it(my toon will not developp that language since I speak better french then english), catch a fews words in spanish, italian or german but not understand really except the basic.

If you put weird stuff, not only I dont understand, but I have no interest and no clue.   If they speak in German, I may very well be playing with my french/german dictionnary beside, you give me an option I didnt have otherwise.  And the funniest part is when something will be written in a language I speak IRL, well, you put symbols because my toon didnt know that language in theory, even less to read/write it.  So I am somewhat cheating by understand when the mobs speak, yet, not really, because I know that foreign language for real.  Maybe you can even put a system where, with great efforts, those weird symbol can transfer to the foreign language even when read/writing, yet, play with the players, make it so they understand they are ''cheating''(not really), yet with efforts you allow it with open arms.  I dont care if the decadent high elf speak french or italian, but nobody will argue it will add to the taste rather then weird: ''LIUG kjsreku  skjhf HGwe!!''

And for the roleplaying signature:  Roleplaying should not be done at the expense of others players, ever, as you long as you respect that golden rule, I am with you, cross it and I am against it.  Instancing is a blessing.

Weird symbol for all those that didnt take read/write is a must.

- "Solo is, will always be, the main market. A MMORPG that succeed with little or no solo appeal is doing great considering they are ignoring the main player base.''

Yeah they woudl NEVER substitute real life languages (besides common=english) for any other language in D&D. For the simple reason that you could just get a dictionary, and 2 it would be stupid.
If they implemented that it would be fantasy made up languages.
Alot of languages in the D&D universe already have character sets, etc.

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Roleplaying Game: A game in which you can effectively play the role of your character and make decisisions that have a meaningful and lasting effect on the world in which you play.

Well the Ideah for Reading/writing is that even if your char can speak a language that doesnt nessisarily mean he/she can read/write the language. Look at even the 17th century only about 50% of people could read and write even though all could speak.

Knowing different languages in D&D has to do with your INT and you will need to get a Reading/Writing proficiancy for each language you speak. And BTW their is no language diffrences like french, english, german in D&D its all common language then you have Goblin, Draconic and ect..

Sorry if i miss-understood any of the above posts but hopefuly this explains the D&D version of languages and Reading/Writing.

-Open your mind for a different view-