add visibility annotations

phetsims / neuron

"Neuron" is an educational simulation in HTML5, by PhET Interactive Simulations.

GNU General Public License v3.0

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Closed jbphet closed 8 years ago

jbphet commented 8 years ago

Visibility annotations should be added, parent issue is phetsims/tasks#307.

jbphet commented 8 years ago

Completed, closing.