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### 13.5 Keeping Numbers in Registers

There are commands to store a number in a register, to insert the number in the buffer in decimal, and to increment it. These commands can be useful in keyboard macros (see Keyboard Macros).

`C-u number C-x r n r`

  Store number into register r (`number-to-register`).

`C-u number C-x r + r`

  If r contains a number, increment the number in that register by number. Note that command `C-x r +` (`increment-register`) behaves differently if r contains text. See Text Registers.

`C-x r i r`

  Insert the number from register r into the buffer.

`C-x r i` is the same command used to insert any other sort of register contents into the buffer. `C-x r +` with no numeric argument increments the register value by 1; `C-x r n` with no numeric argument stores zero in the register.