Here are special commands and techniques for inserting and deleting blank lines.
We have seen how <RET> (
newline) starts a new line
of text. However, it may be easier to see what you are doing if you
first make a blank line and then insert the desired text into it.
This is easy to do using the key C-o (
inserts a newline after point but leaves point in front of the
newline. After C-o, type the text for the new line.
You can make several blank lines by typing C-o several times, or by giving it a numeric argument specifying how many blank lines to make. See Arguments, for how. If you have a fill prefix, the C-o command inserts the fill prefix on the new line, if typed at the beginning of a line. See Fill Prefix.
The easy way to get rid of extra blank lines is with the command
C-x C-o (
delete-blank-lines). If point lies within a run
of several blank lines, C-x C-o deletes all but one of them. If
point is on a single blank line, C-x C-o deletes it. If point
is on a nonblank line, C-x C-o deletes all following blank
lines, if any exists.