Specifies whether the column names and before and after images should be expected grouped together for all columns or interleaved for each column.

delim.isgrouped={true|false}

The default is false. If true, the parser expects find a group of column names (if hasnames is true), followed by a group of before values (if hasbefores), followed by a group of after values (the afterfirst setting will reverse the before and after value order). If false, the parser will expect to find a column name (if hasnames), before value (if hasbefores) and after value for each column.

For example:

delim.isgrouped=true