Returns the row of a table
The function GetRow returns the row of a table or part of it as a result.
If only the table and the number of the line are specified as parameters, the result is the specified line.
If an index and a length are optionally specified, the result is a section of the specified line, starting at the index and with the specified length.
GetRow (table, row)
GetRow (table, row, index, length)