Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I couldn’t google a good explanation about them.
W3 only has a little paragraph about them. Can anybody explain them in a clear form please? What are they used for? What does the “Processing instructions (PIs) allow documents to contain instructions for applications” definition from W3 mean? Are they still useful or long forgotten and substituted by something else?
That paragraph is clear. They provide a way to give an application an instruction.
It isn’t detailed, but that is because any specifics depend on the particular PI.