WordPress Shortcode Breakdown
Shortcode break down – all of these settings and more can be found in Settings / B2i Options

[b2i_page id="16901" lo="2" so="1"]
b2i_page Module
id="16901" id: 16901 unique identifier from B2i portal
lo="2" Output layout – option 2 uses header in dropdown list and Section titles on expandable area
so="1" number of Sections Open by default