TotalView Online Help : Chapter 9 Expression List Window : Edit Menu Commands : Edit > Duplicate Expression
Edit > Duplicate Expression
Makes a copy of the currently selected row and pastes it into the bottom row of the Expression List Window. TotalView duplicates the entire row.
This is useful when you want to track a group of similarly named variables at the same time. For example, you might duplicate my_array_var[random_index] so that TotalView is also tracking my_array_var[random_index+10].