Articles are the topics that warrant their own page, but likely will also end up (at least partially) shown in an issue.
Articles have access to some special tricks that make them easier to render inside an issue. One example of this is the <More/> component.
You can use <More/> to add things that should show in the article but be hidden when rendered elsewhere.
<More>
Stuff that should be shown in the full article, but not in an issue.
</More>