Including Previously Dropped Documents

Option	Reason
-restart	This option specifies an incremental indexing job.
-host	This option restricts indexing to only those hosts which are specified. In this case , they are the hosts you know were not available when the original job ran. When you use `-restart`, you must use at least one of `-host`, `-domain`, `-nofollow`, or `-unlimited`.
-timeout	By increasing the amount of time before a request times out, you increase the chances that will be able to maintain the connection with the host and retrieve documents.
-delay	By specifying a delay in the http requests, you decrease the chances that the hosts will be overwhelmed.
-retry	By specifying `-retry`, you increase the chances that a document will be retrieved. The default value is 4.

Option	Reason
-start, -resync, -refresh	When you use the `-restart` option, you cannot use the `-start`, `-resync` or `-refresh` options.