There are a few things you need to know before editing text in Illustrator. First, the text must be set up as a block. This means that each line of text is divided into blocks, and each block has its own font and size. Second, the text must be set up as a paragraph. A paragraph is made up of lines that are indented one space apart and have a same font size and color. Finally, the paragraph must be set to start on a new line and end on an existing line.