You can upload content for the page named below. If you change the page name, you can also upload content for another page. If the page name is empty, we derive the page name from the file name.
With MoinMoin you can directly append files to a wiki page.
[[attachment:letter.txt]] {{attachment:foto.jpg}}
letter.txt
As long as the files aren't uploaded:
You can click on it and upload the file from your computer's file system to the wiki using your browser. Then the design is regular and:
Further informations on HelpOnActions/AttachFile