Undo stack

<% for entry in @undoEntries: %>
1. <%= entry.description %> <%= JSON.stringify(selectedRange: entry.snapshot.selectedRange, context: entry.context) %>
<% end %>

Redo stack

<% for entry in @redoEntries: %>
1. <%= entry.description %> <%= JSON.stringify(selectedRange: entry.snapshot.selectedRange, context: entry.context) %>
<% end %>