Another question on SO revealed that pageTokens are identical for different searches, provided that the page number and maxResults settings are the same.
Version 2
YouTube's pagetokens can be treated as indices.
Use pagetoken to specify a starting point and maxresults to specify the number of items.
Examples:
https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet&playlistId=
https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet&playlistId=
https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet&playlistId=
https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet&playlistId=
https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet&playlistId=
https://www.googleapis.com/youtube/v3/playlistItems?part=id%2Csnippet&playlistId=