discard example
Discarding an element referenced with use by clicking or activating the (top) blue line.
The animation with a duration of 10s and a frozen final state expands
a blue line from zero to a finite horizontal length.
The line will be discarded with a click or an activation.
Below the line is referenced with use, if the top line is discarded, the used line
will be removed too.
A gray line indicates the full finite length after 10s, as long as the
line is not discarded.
click or activate to discard