rowrange
Usage:
rowrange <first> <last>|+<count>
Includes only rows in a given range.
The range can either be supplied as
"<first> <last>",
where row indices are inclusive, or
"<first> +<count>".
In either case, the first row is numbered 1.
Thus, to get the first hundred rows, use either
"rowrange 1 100" or
"rowrange 1 +100"
and to get the second hundred, either
"rowrange 101 200" or
"rowrange 101 +100"
The integer arguments may be given as a plain integer (1000),
or with embedded underscores (1_000),
or in exponential format (1e3).