The Emacs commands for manipulating sentences and paragraphs are mostly on Meta keys, so as to be like the word-handling commands. A sentence also begins or ends wherever a paragraph begins or ends. With minus one as an argument it kills back to the beginning of the sentence.
Larger arguments serve as a repeat count.
The variable sentence-end controls recognition of the end of a sentence. It is a regexp that matches the last few characters of a sentence, together with the whitespace following the sentence. This example is explained in the section on regexps. See Regexps .