• rowColToPos ?-w win? ?-v? row col
Return the absolute position of the character located at the given
row and column values. It raises an error if the row
argument is out of range.
If the col argument exceeds the end position of the given row,
the command returns the position corresponding to the end of this row.
If the -v option is specified, the col argument is
interpreted as a virtual index taking into account the size of the
tabulations (see explanations with the [posToRowCol] command).