let test = Peek('EmployeeCode',-2,'EmployeeDates') ; -> Correct, both row_no and table_name are being used at the same time
trace $(test); result = 105
let test1 = Peek('EmployeeCode') ; -> Correct, if no row is stated, -1 is assumed and if no table_name is stated, the current table is assumed.
trace $(test1); result = 106
let test2 = Peek('EmployeeCode',0) ; -> Correct, if no table_name is stated, the current table is assumed.
trace $(test2); result = 101
let test3 = Peek('EmployeeCode','EmployeeDates') ; -> Incorrect, row_no is not being specified in this case.
trace $(test3); result = NULL