When you publish an item in Sitecore through the "Publish item"Publish item
dialog, you are offered several options. You can choose between "Smart publish"Smart publish
or "Republish"Republish
, you can also choose whether to "Publish subitems"Publish subitems
or not.
These options are pretty self-explanatory.
However, what exactly does the "Publish related items"Publish related items
option do?