from-wp
Create a "from-wp" range starting at a waypoint (inclusive to end of slide).
Returns a range marker visible from the waypoint's first subslide onward.
Does not create a waypoint — the referenced label must be defined
elsewhere (via #waypoint() or an implicit waypoint in #uncover, etc.).
Can be composed with prev-wp / next-wp:
from-wp(next-wp(<my-label>)) starts at the waypoint after <my-label>.
Combine with until-wp in an array for bounded ranges:
(from-wp(<a>), until-wp(<b>)) — visible from <a> to just before <b>.
Parameters
wp : label | dictionary
A waypoint label or a shifted reference (e.g. next-wp(<label>)).
Returns: dictionary