List of things to do related to multiple extents (feel free to add/suggest, remove items):

[prushforth]

List of things to do related to multiple extents (feel free to add/suggest, remove items):

• prevent absent extent label attribute from making previous sibling extent elements hidden to the user
• enable checked attribute on extent so that extents can be author configured, slightly
• Allow author to set extent opacity #735
• enable extent display/undisplay in debug mode when checked/unchecked
• label extents according to their label value in debug mode
• create / enable "Zoom To..." in layer control (extent) context menu #926
• create / enable "Copy Extent As..." in layer control (extent) context menu #927
• Enable mixed HTML/MapML query responses to be navigated via popup
  Multiple extents #652

Originally posted by @prushforth in #632 (comment)