Currently when you create custom folds using a FoldingRangeProvider, there is no option to edit the text that is displayed when the text is folded. The editor just displays the first line of the fold with a three dots symbol after it.

#region Some region description...

It would be helpful if it was possible for FoldingRangeProvider instances to return ranges with a RangeDisplayName property that would be displayed when the folding range wass collapsed. I'd suggest that the display text would replace the ... symbol and the first line would no longer be displayed as per the behaviour in Visual Studio.