1. Hello jnwhiteh. Please tell me how to use SendChatMessage value \n

    You cannot send a newline in SendChatMessage.

    You cannot send a newline in SendChatMessage.

    And how to get this result? In SendChatMessage?

    You can't. It's purposely disabled. Allowing someone to send a newline amounts to giving them the ability to pretend to send messages from someone else. You cannot do it.

    You can't. It's purposely disabled. Allowing someone to send a newline amounts to giving them the ability to pretend to send messages from someone else. You cannot do it.

    How to make as here ! http://imageshack.us/photo/my-images/27/hellohu.png/

    You use colour codes: http://wowprogramming.com/docs/api_types#colorString

    And probably to make it automatically, thus, color has been imposed? For example /command hello world and it at once will the color.

    You write an algorithm to do that. That's not something I can help you with.

    Can give a template as it to do

    I'm sorry, but I can't write a color shifting algorithm for you. The example I links you shows you how to add colour codes to strings, which is what you've asked for.

    Clearly. And how to change/roll to be exact an inscription in a chat. That without (username throws out) That there were simply figures

    I don't know how to respond to that. This is a website about the book World of Warcraft Programming. I am here to help people who are having issues with the book. If you do not own the book, I suggest you ask your questions on one of the many available World of Warcraft development websites.