The only time you would use all capital letters in dialogue is when you want to represent shouting or extreme emphasis.
Example: "I know, I KNOW ...!" Edward, said angrily, "I HEARD YOU THE FIRST TIME!! Do you hear?"
"Capital" letters, different in form from their lower case equivalents, are only found in languages written in the Roman and Greek alphabets and their derivatives, such as Cyrillic. Examples of languages without capital letters are: Hebrew Arabic Chinese Japanese Korean Lao Thai Hindi Bengali Gujarati Punjabi Sinhala Burmese
Using all capital letters for a name is called "acronym."
The U.S. Post Office does recommend capitalizing all letters on a mailing address.
It makes you a non-person. YOU HAVE NO RIGHTS
Using all capital letters online is often interpreted as shouting and can come across as aggressive or rude. It's best to use mixed-case letters to avoid giving off the wrong impression and to make your text easier to read.
Sentences start with capital letters and end with periods because this is a rule of correct writing and if you follow it, you will be seen as an intelligent and well-educated person by whoever reads what you write.
Ζευς is Zeus in upper and lower case. In all capitals it would be: ΖΕΥΣ
"Capital" letters, different in form from their lower case equivalents, are only found in languages written in the Roman and Greek alphabets and their derivatives, such as Cyrillic. Examples of languages without capital letters are: Hebrew Arabic Chinese Japanese Korean Lao Thai Hindi Bengali Gujarati Punjabi Sinhala Burmese
Using all capital letters for a name is called "acronym."
Writing in all capital letters is often used to convey yelling, urgency, or emphasis in written communication. It can also be seen as disrespectful or aggressive depending on the context.
You have to connect MOST letters but not all of them
The U.S. Post Office does recommend capitalizing all letters on a mailing address.
It makes you a non-person. YOU HAVE NO RIGHTS
Capital letters and block letters are not the same. Capital letters refer to uppercase letters of the alphabet, while block letters refer to a specific style of writing where the letters are formed by straight lines and angles, often resembling printed text. While capital letters can be written in block letter form, not all block letters are necessarily in capital form.
All of them
http://wiki.answers.com/Q/Enlist_all_the_Rules_of_dialogue_writting" http://wiki.answers.com/Q/Enlist_all_the_Rules_of_dialogue_writting"
In the printing and publishing business, writing is called "All Caps", and can be referred to as "unicase". In everyday use, however, it is call bad manners.