... Regular expressions allow more specific queries then a simple query. ... Matches one or more uppercase letters . ... c A backslash (\) followed by any special character is a one-character regular expression that matches the spe- cial character itself. ... A `.' (period) is a one-character regular expression that matches any character except NEWLINE. [string] A non-empty string of characters enclosed in square brackets is a one-character regular expression that matches any one character in that...