framePosition - 0 (this is the beginning of the page)

frameSize - maximum 200. this is the number of products on the page. you can request a maximum of 200 products in one request

to request further, specify:

framePosition: 200 (this is the beginning of the page)

frameSize: 200 (for example)

to request further, specify:

framePosition: 400 (this is the beginning of the page)

frameSize: 200 (for example)