display of comments changed, and i don't know why Options

[Curator]

something changed in how posts are shown in a thread forum

it used to just display every comment up to 20? and then need to switch pages

it's all a giant list with a display like this to click to see comments

post by user a
---quote post of user a by user b
post by user c
post by user a
-------quote etc etc etc

for however many comments there are

did i change something by accident and how can i get back to normal

thank you!