You can edit the content of a message when you work in the message composition window. You can edit the content of a message as follows:
To select all the text in a message, choose Edit -> Select All.
To remove text from a message and place the text on the clipboard, select the text in the message, then choose Edit -> Cut.
To copy text from a message to the clipboard, select the text in the message, then choose Edit -> Copy.
To paste text from the clipboard into a message, position the cursor in the message where you want to insert the text. Choose Edit -> Paste.
To paste text from the clipboard into a message as a quotation, position the cursor in the message where you want to insert the text. Choose Edit -> Paste Quotation. The text is inserted into the message, with greater-than signs (>) before each line of the inserted text.