You have access to the string from any row of the memory file so you can get the string associated with a row, modify it, and place it back in the memory file.
If you are modifying the contents of the memory file, you may need to get a copy of the contents of the memory file row, find out the length of the string in a memory file row, or find the pointer to the string associated with a memory file row.
Getting a Copy of the Contents of a Memory File Row
Getting the Length of a String in a Memory File Row
Getting a Pointer to the String in a Memory File Row
