Create and align a collection of textual shapes onto a base curve and a normal field.

Input parameters:

1. Tx → Text to create.
2. Fn → Font name and optional properties.
3. Hg → Height of text shapes.
4. Dp → Depth of text shapes.
5. Ln → Base line for text positioning.
6. Nr → Orientation of normal direction.

Output parameters:

1. Sh → Resulting text shapes.