The External settings allow you to use external word processors, like MS Word as part of your workflow:

ExternalDirectoryThe shared directory where documents are stored.
DefaultSubDirectoryThe template to use to create the case (work product) directory.
DefaultExternalSubfoldersA list of folders that will be created for each case (work product). The first character is the delimiter.
QuickSearchDirectoryThe shared directory where Quick Search files are kept.
TemplateDirectoryThe directory where templates are stored.  If left blank the local template directory C:\Documents and Settings\<user>\Templates is used.
ExternalProgram<n>The displayed title of the program.
ExternalExe<n>The executable name.
ExternalParams<n>The parameters to be used.  See Word/Excel/WordPerfect for more detail.


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