You can edit a wide range of data while debugging your programs, such as variable type, value, and address, as well as source code. For instance, use the File > Edit Source command to examine the current routine in a text editor.
If you edit source code while testing, be aware that these changes are within TotalView only and are not persisted to your actual files.
See More
On general editing capabilities in dialog boxes: “Editing Text” in the TotalView User Guide