You can create bookmark groups to organize the bookmarks in a project. A bookmark group can contain bookmarked files, folder, and additional bookmark groups. The bookmark group exists only in the project, not on your computer. Use Group() to create the bookmark group.
project = New Project();
project << Add Bookmarks(
{File( "$SAMPLE_DATA/Air Traffic.jmp" ),
File( "$SAMPLE_DATA/Big Class.jmp" )}
project << Set Layout(