HOW TO BOLD OR COLOR TEXT IN IMESSAGE

Sorry2Bother wrote:

where can I find instructions to use different formats of text (bold, italics, colors) in iMessage?

I wonder if Apple will offer a way to block people who insist on using colored text?

Apple Inc says; "We read all feedback carefully, but we are unable to respond to each submission individually."

Here is how for iPhone · Country or region* Select your country or region. · Feedback Type* Select feedback type. · Comments* Enter a comment.

Feedback - iPhone - Apple

where can I find instructions to use different formats of text (bold, italics, colors) in iMessage?