PolyHarp creates virtual strings in four-sided shapes called String Areas. There can be many string areas on the screen, not just one! In Edit Mode, you can configure these String Areas, and each area has the following properties:
How many actual "strings" correspond to each virtual string. You can make each course have up to seven differently tuned strings in it. See: Course View.
Its own synthesizer setting. Each string area can sound different!
A MIDI channel and program. You can have each string area play on different programs on different MIDI devices!
Its own shape! You can keep them rectangular, but also use the "quad" option to make them different shapes and orientations.
The way it responds to your initial touch:
ChordBars now can be associated to all string areas or any combination of 8 of them (internally, more, but just 8 in the interface). When you push a ChordBar, all the strings in the String Areas are affected that correspond to the resolved notes in that chord, and strumming the strings in one area does not also strum the strings in another area, even if they are the same "note". It's as if they are on different channels or are separate devices!