Upload parameter
upload
0
- nobody[user_group]
- members of user group + admins1
- registered usersupload_images_only
0
- allowed users can upload all allowed files1
- allowed users can upload only pictures, except adminsname space
global - all allowed users can upload
page - allowed users can upload when
- page owner,
- admin, or
- allowed by ['upload'] page ACL
overwrite
file owner and admin can overwrite a existing file