I'm no expert in certificates, but one of
google[
^]'s first results is the
MSDN entry[
^] for it. It says
isChainIncluded
is "A Boolean value that specifies if the validation is done using a certificate chain."
I wasn't sure what exactly they meant by certificate chain. So I
googled[
^] that too.
First result[
^] is an IBM explaination with a nice diagram.
Hope this helps.