To insert printing characters into the text you are editing,
just type them. This inserts the characters you type into the
buffer at the cursor (that is, at point; see section Point). The
cursor moves forward, and any text after the cursor moves
forward too. If the text in the buffer is `FOOBAR', with the
cursor before the `B', then if you type XX, you get `FOOXXBAR',
with the cursor still before the `B'. To delete text you have
just inserted, use DEL. DEL deletes the character before the
cursor (not the one that the cursor is on top of or under; that
is the character after the cursor). The cursor and all
characters after it move backwards. Therefore, if you type a
printing character and then type DEL, they cancel out. To end a
line and start typing a new one, type RET. This inserts a
newline character in the buffer. If point is in the middle of a
line, RET splits the line. Typing DEL when the cursor is at the
beginning of a line deletes the preceding newline, thus joining
the line with the preceding line. Em