GNU Emacs Manual. Node: Marking Objects

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7.4: Commands to Mark Textual Objects

Here are the commands for placing point and the mark around a textual object such as a word, list, paragraph or page.

M-@

Set mark after end of next word (mark-word). This command and the following one do not move point.

C-M-@ Set mark after end of next Lisp expression (mark-sexp).
M-h Put region around current paragraph (mark-paragraph).
C-M-h Put region around current Lisp defun (mark-defun).
C-x h Put region around entire buffer (mark-whole-buffer).
C-x C-p Put region around current page (mark-page).

M-@ (mark-word) puts the mark at the end of the next word, while C-M-@ (mark-sexp) puts it at the end of the next Lisp expression. These commands handle arguments just like M-f and C-M-f.

Other commands set both point and mark, to delimit an object in the buffer. For example, M-h (mark-paragraph) moves point to the beginning of the paragraph that surrounds or follows point, and puts the mark at the end of that paragraph (see Paragraphs). It prepares the region so you can indent, case-convert, or kill a whole paragraph.

C-M-h (mark-defun) similarly puts point before and the mark after the current or following defun (see Defuns). C-x C-p (mark-page) puts point before the current page, and mark at the end (see Pages). The mark goes after the terminating page delimiter (to include it), while point goes after the preceding page delimiter (to exclude it). A numeric argument specifies a later page (if positive) or an earlier page (if negative) instead of the current page.

Finally, C-x h (mark-whole-buffer) sets up the entire buffer as the region, by putting point at the beginning and the mark at the end.

In Transient Mark mode, all of these commands activate the mark.

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