What a great and helpful guide you've written. Respect.
Just updated it!
Why didn't you share the URL to sign up in the article
Learn how to master the Curve Bridge brush in ZBrush and how to use it to save time on sculpting with a new guide from FlippedNormals.
Here’s an overview of the brush from Pixologic:
The Curve Bridge Brush creates a polygon bridge between two drawn curves and automatically welds this bridge’s edge points to the original surface.
The new polygons that form the bridge receive their own PolyGroup. They can be directly manipulated without affecting the support mesh due to an automatically assigned mask that is applied to the support mesh. This is similar to how a mesh insert automatically masks the support mesh.
The Curve Bridge uses the new Curve Frame capability to detect the support mesh’s openings, PolyGroups and/or creased edges. As soon as two distinct curves have been created, ZBrush will generate a polygon bridge between the two surfaces.
You can find more info on using it here.