tbcconv default behavior (without -P option)

When the tbcconv utility command is used without the -P option, only Text and Syntax items with values for Bytes specified for the Min and optionally Max properties will be converted to Min and Max Characters properties, and the Min and Max Bytes sizes will be reset, meaning that Min Bytes size will be automatically set to 0, and the Max Bytes size will be set with no byte constraint. It does not affect Date & Time and Number items, which are sized according to the existing formats used.

By leaving no value for the Min property under Bytes, the Min property will be automatically set to 0. By leaving no value for the Max property under Bytes, there will not be a byte constraint.