The entire contents of the link-goto macro are displayed to the user if they hover their mouse over the text for the link-goto link text. Because of this, they can see the name of the Passage they would move to by clicking the link which may contain spoiler information. This is not so for the standard link macro.
Comments
(link:link text)[(goto:passage name)]
<!--link text->passage name-->
The comment is just to make sure the Twine 2 editor maintains an arrow pointing to the destination passage