When the article uses images/videos/GIFs with captions as the main medium (e.g.: travel blogs that show many photos with captions, step-by-step crafting guides, cooking recipes, etc.).
If I understand this clarification correctctly, it is applicable only to pages, that contains nothing except the slideshow...
Type of issue
IV page is missing essential content
Reported
Jun 15, 2017
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https://instantview.telegram.org/checklist#6-4-galleries-and-slideshows