Below the list of investigators, the PDF document to support the science case must be attached. This is limited to a maximum of four pages (six for Large Programs) and must not exceed a total size of 20 Mbytes. Figures can be included if desired. Once attached, the PDF file can be removed and replaced with another and can also be viewed, provided that your computer contains appropriate software. The technical justification is not included in the PDF, this information being placed into a dedicated node of each Science Goal.