You can change the content of free-form texts any way you want.
Warning
Free-form texts are not saved in groups and are thus not protected by access privileges for groups. Therefore, it is possible to have reports output the free-form texts of models for which the person running the report does not have read privileges. Therefore, remember not to include confidential information in free-form texts but to use model and object attributes for that.
Procedure
In the model window, click the free-form text twice. Alternatively, you can click the free-form text and then press the F2 key.
Use the arrow keys to select the text area you want to overwrite.