File formats and file types
Chimpsky internally works with plain text. Chimpsky will automatically extract the text from common document formats including PDF, DOC, DOCX, WPD, RTF and ODT; other content like embedded images is discarded. Extraction requires that the file names have the appropriate file name extensions (a.doc, b.pdf, ...).
When uploading files, pay attention to the distinction between student files (files submitted to you by your students) and template file (instructor's questions). For each task, only one template file can exist; if you upload another one, the previous one will simply be forgotten.
When a file is uploaded with the same file name as a previous one, the previous one will be overwritten. This will happen without user confirmation.
Uploading multiple student files
In adequate browsers (that is, most browsers other than Internet Explorer), you can select multiple files at once in the file-select field for the student files, and all of these will then be uploaded at the same time (even though the file-select field will only show one file name). Depending on the number and size of the files, multiple upload can be slow. Be patient and have faith; consider passing the time by rolling the mouse over the monkey a couple of times.
Inadequate browsers don't allow multiple file upload, so you are reduced to uploading single files, which quickly becomes tiresome. In this case, you can use a tool like WinZip or 7-zip to pack many student files into a single zip file on your own computer. After upload, the zip file will be unpacked on the server. Again, be patient when uploading big zip files.