You can make any desired change to free-form text.
1. Select the free-form text.
2. Press F2. Alternatively, you can click on the free-form text again after you have selected it. It is selected for editing.
3. Use the arrow keys to select the text area you want to overwrite.
4. Overwrite the text area you want to modify.
5. Press the Enter key or click outside the text box.
The free-form text is modified.