When you select an article the current article buffer will be reused
according to the value of the variable
gnus-single-article-buffer. If its value is non-
default) all articles reuse the same article buffer. Else each group
has its own article buffer.
This implies that it's not possible to have more than one article buffer in a group at a time. But sometimes you might want to display all the latest emails from your mother, your father, your aunt, your uncle and your 17 cousins to coordinate the next Christmas party.
That's where sticky articles come in handy. A sticky article buffer basically is a normal article buffer, but it won't be reused when you select another article. You can make an article sticky with:
To close a sticky article buffer you can use these commands:
To kill all sticky article buffers you can use: