553a0d9f_sion_threads___Resource_Center__To
[Do this] In the Attachments area, click Browse to locate the file you want to attach, or, if you are using a supported browser, drag and drop your files onto the attachments upload target. You can attach as many files as you want. Note Internet Explorer 9 and older currently do not support dragging and dropping files from your desktop into Learning Environment. [To] 
Attach a file
Creating and replying to discussion threads | Resource Center
To