Getting all queue items?

I use my queue as a convenient place for bookmarking videos. However I’ve noticed that the UI shows only the last 100 items.

This endpoint shows them as XML: https://plex.tv/pms/playlists/queue/all

The root of that includes:

<MediaContainer totalSize="139" size="100" ...>

So it looks like it knows there are more than 100, but it’s only showing me 100.

Is there an argument that will give me more items? I tried things like ?size=200 but that didn’t work.