{"text_format":"3","workbook":"xlsx","n_sheets":3,"sheets":["First Sheet","Sheet Number 2","Sheet3"],"read":"whole","date_system":"1900"}

{"sheet":"First Sheet","index":0,"n_rows":4,"n_cols":2,"rows_kept":4}
["Test spreadsheet"]
["2nd row","2nd row 2nd column"]
[]
["This one is red"]

{"sheet":"Sheet Number 2","index":1,"n_rows":7,"n_cols":4,"rows_kept":7}
["Start of 2nd sheet"]
["Sheet 2 row 2"]
[]
["I'm in bold blue, on a yellow background"]
[]
["cb=1","cb=10","cb=2","cb=sum"]
[1,10,2,{"$f":"SUM(A7:C7)","v":13}]

{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0}