Returns an object of list class with the following components:
find.whatstring to search for
replace.withreplacement string
is.match.wordindicates whether matches be restricted to whole words only.
is.match.caseindicates whether the search is case sensitive.
is.reg.expsif true, the search is made using regular expression;
that is, a pattern that describes a set of strings.
is.search.colindicates whether the search is limited to a single column.
is.perlindicates whether Perl style regular expressions should be used.
is.replace.firstindicates whether to replace for only the first instance.
is.search.selindicates whether the search limited to selected cells.