[wp-meta] [Making WordPress.org] #3116: Support new "heading" parameter for sessions and speakers shortcodes

[Making WordPress.org]

#3116: Support new "heading" parameter for sessions and speakers shortcodes
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 Reporter:  mrwweb                   |      Owner:
     Type:  defect                   |     Status:  new
 Priority:  normal                   |  Milestone:
Component:  WordCamp Site & Plugins  |   Keywords:
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 Many of the parameters for sessions and speaker shortcodes such as date or
 group, respectively, encourage outputting subsets of sessions or speakers.
 If these subsets appear on the same page, it's likely that each group is
 preceded by a Heading 2.

 Since the default shortcode output uses Heading 2s for each title/name,
 this leads to an overly-flat and arguably inaccurate heading outline that
 decreases the site's accessibility for screen reader users. For sited
 users, the visually hierarchy of this is also subpar and makes it harder
 to scan the [usually extremely long] page.

 Therefore, a new "heading" parameter (e.g. [sessions date="YYYY-MM-DD"
 heading="3"]) should be introduced to allow site users to output more
 accessible and usable markup.

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Ticket URL: <https://meta.trac.wordpress.org/ticket/3116>
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