Insert text from register @var{r} (@code{insert-register}).
@item M-x append-to-register @key{RET} @var{r}
Append region to text in register @var{r}.
+
+@kindex C-x r +
+When register @var{r} contains text, you can use @kbd{C-x r +}
+(@code{increment-register}) to append to that register. Note that
+command @kbd{C-x r +} behaves differently if @var{r} contains a
+number. @xref{Number Registers}.
+
@item M-x prepend-to-register @key{RET} @var{r}
Prepend region to text in register @var{r}.
@end table
the region text to the text in the register instead of
@emph{appending} it.
+@vindex register-separator
+ When you are collecting text using @code{append-to-register} and
+@code{prepend-to-register}, you may want to separate individual
+collected pieces using a separator. In that case, configure a
+@code{register-separator} and store the separator text in to that
+register. For example, to get double newlines as text separator
+during the collection process, you can use the following setting.
+
+@example
+(setq register-separator ?+)
+(set-register register-separator "\n\n")
+@end example
+
@kindex C-x r i
@findex insert-register
@kbd{C-x r i @var{r}} inserts in the buffer the text from register
@item C-u @var{number} C-x r + @var{r}
@kindex C-x r +
@findex increment-register
-Increment the number in register @var{r} by @var{number}
-(@code{increment-register}).
+If @var{r} contains a number, increment the number in that register by
+@var{number}. Note that command @kbd{C-x r +}
+(@code{increment-register}) behaves differently if @var{r} contains
+text. @xref{Text Registers}.
@item C-x r i @var{r}
Insert the number from register @var{r} into the buffer.
@end table