	  Regular Expression Search
	     The following characters are used to perform reqular
	  expression searching.  This set matches the grep utility very
	  closely. We will be integrating a help facility in to the
	  search function very soon now. For now this is what you get.
	  This search information is also contained on the distribution
	  diskette in the file re.hlp.

	     x     An ordinary character (not mentioned below) matches that
		   character.

	     \     The backslash quotes any character.  \"\\$\" matches a
		   dollar-sign.

	     ^     A circumflex at the beginning of an expression matches
		   the beginning of a line.

	     $     A dollar-sign at the end of an expression matches the
		   end of a line.

	     .     A period matches any character except \"new-line\".

	     :a    A colon matches a class of characters described by the
		   following

	     :d    character.  \":a\" matches any alphabetic, \":d\"
		   matches digits,

	     :n    \":n\" matches alphanumerics, \": \" matches spaces,
		   tabs, and

	     :    other control characters, such as new-line.

	     *    An expression followed by an asterisk matches zero or
		  more occurrances of that expression: \"fo*\" matches
		  \"f\", \"fo\" \"foo\", etc.

	     +    An expression followed by a plus sign matches one or more
		  occurrances of that expression: \"fo+\" matches \"fo\",
		  etc.

	     -    An expression followed by a minus sign optionally matches
		  the expression.

	     []   A string enclosed in square brackets matches any
		  character in that string, but no others.  If the first
		  character in the string is a circumflex, the expression
		  matches any character except \"new-line\" and the
		  characters in the string.  For example, \"[xyz]\"
		  matches \"xx\" and \"zyx\", while \"[^xyz]\" matches
		  \"abc\" but not \"axb\".  A range of characters may be
		  specified by two characters separated by \"-\".  Note
		  that, [a-z] matches alphabetics, while [z-a] never
		  matches.

	  The concatenation of regular expressions is a regular expression.


