FUSIONPlugin is a DOCUMENTS 7-specific plug-in. It is part of the functionality that handles communication and synchronization between DOCUMENTS and the Invoice modules/components. User-defined variables play a part in this.
FUSIONPlugin is included in DOCUMENTS installations. Its INI file sections are:
[eimngr::FUSIONPlugin]
Name=FUSION plugin
Type=COM
SupportIDispatch=TRUE
Classname=ReadSoft.FUSION.ACL.InvoicesPlugin.ConnectClass
[eiitrp::FUSIONPlugin]
Name=FUSION plugin
Type=COM
SupportIDispatch=TRUE
Classname=ReadSoft.FUSION.ACL.InvoicesPlugin.ConnectClass
[eiveri::FUSIONPlugin]
Name=FUSION plugin
Type=COM
SupportIDispatch=TRUE
Classname=ReadSoft.FUSION.ACL.InvoicesPlugin.ConnectClass
[eiopti::FUSIONPlugin]
Name=FUSION plugin
Type=COM
SupportIDispatch=TRUE
Classname=ReadSoft.FUSION.ACL.InvoicesPlugin.ConnectClass