The method Hilite looks for one (or more) strings in a text and put, around every found item, a pre and post string. Example:
myString = "This is a good World"
pre = '<font color="green">'
post = '</font>'
$myString.Hilite(true, pre, post, 'This', 'good')
The result is:
<font color="green">This</font> is a
<font color="green">good</font> World
The pre and post string can contain also symbols that will be substituted with original string: ** => substitute with str, $ => substitute with str url encoded and ## => substitute with str encoded isolatin