where <ftag> is the feature’s tag (an identifier of your choice), and
ftype is the feature’s type. Feature types are capitalized and case-sensitive, for example
Rectangle.
When you add a feature, it is inserted after the current feature. You can get the tag of the current feature type by entering
If ftag is the empty string, the current feature is the beginning of the geometry sequence, that is, the empty state before all features. When the feature has been added, it automatically becomes current, but it is not built automatically.