Determines whether repository queries will be run in a background process.
You may also speed up the
search process by excluding system components (e.g., IBM and Sun projects,
packages and classes).
Since the query runs against the
repository, returned components will be shadow components by default. If
you would prefer to have the query return loaded (non-shadow) versions of
any components loaded within your workspace, turn off this option.
You may also speed up the
search process by limiting the search depth within the repository. Set the
search depth to "1", for example, will cause only the most
recent editions to be searched. "All Editions" will cause all
editions in the repository to be searched. "Editions created from/to"
will cause only those editions created between the two specified dates to be searched.