{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["my sheet","Sheet2","Sheet3"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"my sheet","index":0,"n_rows":9,"n_cols":1,"rows_kept":9,"merged":[[8,0,8,1]],"flags":["formulas_cached_only"]}
["This is a Text"]
["This is a very long long long Text"]
[]
[]
[]
[]
[]
[]
["This is a HUGE text in a merged region: blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah."]

{"sheet":"Sheet2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}