If you use it exactly as it shows in the Help - <spoiler mode=silent>Text </spoiler> then it will work. However, it doesn't show up properly in a preview, only in the finished post.
ZedZed77
member, 250 posts
Fri 11 Mar 2016 at 20:32
msg #5
Spoil mode=silent
Ah, thanks. I was indeed stopping at the preview part.
edit: I think there's a typo in the help because it definitely says "spoil" and not "spoiler." This message was last edited by the user at 20:33, Fri 11 Mar 2016.