{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"not_rendered":{"images":2},"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":10,"n_cols":7,"rows_kept":10}
[]
[]
[]
[]
[{"$nulls":3},"Floppy Disk","Quick Disk","Punched Cards","Magnetic Tape"]
[null,"Capacity",null,"360 kB, multiple files","64 kB, single stream","40* Bytes / card","Varies"]
[null,"Random access",null,"YES","NO","NO","NO"]
[null,"Built-in Encryption",null,"NO","YES, XOR","NO","NO"]
[null,"I/O Speed",null,"1 (reference point)",{"$f":"\"2-3\"","v":"2-3"},{"$f":"\"0.5\"","v":"0.5"},{"$f":"\"0.5\"","v":"0.5"}]
[{"$nulls":5},"*using hex encoding"]