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18. Registers

Emacs registers are compartments where you can save text, rectangles, positions, and other things for later use. Once you save text or a rectangle in a register, you can copy it into the buffer once, or many times; you can move point to a position saved in a register once, or many times.

Each register has a name, which consists of a single character. A register can store a number, a piece of text, a rectangle, a position, a window configuration, or a file name, but only one thing at any given time. Whatever you store in a register remains there until you store something else in that register. To see what a register r contains, use M-x view-register.

M-x view-register <RET> r

Display a description of what register r contains.

Bookmarks record files and positions in them, so you can return to those positions when you look at the file again. Bookmarks are similar enough in spirit to registers that they seem to belong in this chapter.


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