You can use the Anchor manager to add, remove and rename anchor classes.

Cursive is a special anchor class which is solely used with Cursive Attachment lookups.

You can add anchors to glyphs through the Anchors panel, Glyph panel, and the OpenType Designer dialog.

Tip: Set Anchors places the anchors on the glyphs; the Anchor Manager then turns them into mark positioning lookups.