(query-replace-string search replace) ESC-q
Replaces all occurrences of one string with another, starting at dot and ending at the end of the buffer. For each occurrence of the old string, Emacs requests that the user type a character indicating whether or not to replace the string. Dot will be positioned just after the found string.
(quietly-read-abbrev-file file-name)
Reads in and defines abbreviations appearing in a named abbreviations file. Unlike read-abbrev-file, an error message is not printed if the file cannot be found.
Unix only.
Send signal SIGQUIT to the named process.
Returns its string argument so that any meta-characters used by regular expression string searching are quoted so that they have no effect. This is useful for MLisp packages that use regular expression search commands.
Inserts into the buffer the next character typed without interpreting it as a command. This is how you insert non-printing characters.