*active-finders* controls how the functions find-name-locations and find-dspec-locations operate. This in turn controls source the finding commands in the LispWorks IDE. You can switch between different sources of location information by setting this variable.
The internal database of definitions performed in this image.
Prompt for a tags file, when first used.
Either a tags file or a tags database.
A tags database is a fasl file generated by save-tags-database.
The order of this list determines the order that the results from the finders are combined in -- you would usually want
:internal to be the first item on this list, as it contains the up-to-date information about the state of the image. More than one pathname is allowed.
LispWorks User Guide and Reference Manual - 13 Feb 2015