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Here are special commands and techniques for entering and removing
Insert one or more blank lines after the cursor (`open-line').
Delete all but one of many consecutive blank lines
When you want to insert a new line of text before an existing line,
you just type the new line of text, followed by RET. If you prefer to
create a blank line first and then insert the desired text, use the key
`C-o' (`open-line'), which inserts a newline after point but leaves
point in front of the newline. Then type the text into the new line.
`C-o F O O' has the same effect as `F O O RET', except for the final
location of point.
To create several blank lines, type `C-o' several times, or give
`C-o' an argument indicating how many blank lines to create. *Note
Arguments::, for more information.
If you have many blank lines in a row and want to get rid of them,
use `C-x C-o' (`delete-blank-lines'). If point is on a blank line
which is adjacent to at least one other blank line, `C-x C-o' deletes
all but one of the blank lines. If point is on a blank line with no
other adjacent blank line, the sole blank line is deleted. If point is
on a non-blank line, `C-x C-o' deletes any blank lines following that
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