Valid Values are:
text - normal text
unicode - unicode text
program - binary executable file
exe - same as program
docfile - MS Docfile format (all MS Office documents)
doc - Same as docfile
datfile - data files such as older Word 1.x or MS Write
dat - same as datafile
graphic - graphics and image formats such as jpg, gif.
media - multimedia formats such as mp3, avi, etc.
nsf - any Notes database format
all - all content types (overrides other types)
Using the keyword <exclude> as the first type will create an exclusion list rather than an inclusion list.
This key is NOT created by default.