File Manager allows you to edit text files on the server. This is convenient since you do not have to edit the file on a local machine, then upload it to the server.
To edit a file on the server, select the file from the "Source" directory window and click the "Edit" button. An editing window will appear. Edit the file as necessary and click the "Save" button. To cancel the editing and not save the changes, click the "Abort" button.
If you try to edit a non-text format file, a warning message will be displayed and access will be denied.