List of things to do related to multiple extents (feel free to add/suggest, remove items): - [x] prevent absent extent `label` attribute from making previous sibling extent elements hidden to the user - [x] enable `checked` attribute on `extent` so that extents can be author configured, slightly - [x] #735 - [x] enable extent display/undisplay in debug mode when checked/unchecked - [ ] label extents according to their `label` value in debug mode - [x] #926 - [x] #927 - [x] Enable mixed HTML/MapML query responses to be navigated via popup https://github.com/Maps4HTML/Web-Map-Custom-Element/pull/652 _Originally posted by @prushforth in https://github.com/Maps4HTML/Web-Map-Custom-Element/issues/632#issuecomment-1011383080_