One or two Synth Windows are available depending on whether the Enable Secondary Device option in the Device Options Tab in the the Preferences Dialog is checked or unchecked.
The SY Synthesizer Data Window is made visible by ensuring the View [DEVICE] Synthesizer Data option in the Window Menu is checked.
The Title of the Window indicates whether or not the connected synthesizer (as defined in the Device Type tab of the Preferences Dialog) is an SY77, TG77 or SY99. The example below shows two Synth Windows for an SY99 as the Primary Device and an SY77 as a secondary Device
This Child Window is a special View that shows the following SY Preset and User Data Collections:
The purpose of showing these User Data Collections is to allow drag and drop transfers of User data, such as Voices and Multis between sy.factory and the SY via the MIDI Interface.
The Preset data can be drag copied onto user data if required. For example, you can drag a Preset Voice onto a Multi part.