You measure how far across the circle is. ok. So lets see... the
diameter of a circle is 15 inches. That means from one end to
another, it is 15 inches. Click here for an Example:
http://i40.tinypic.com/311owv4.jpg
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It depends on your file system. Some filesystems are CASE
sensitive but typically JPG and jpg are the same thing.
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* matches anything. *.jpg would mean any file with a .jpg
extension. 1*.jpg would mean any file where the name begins with 1
and ends with a .jpg ? matches any single character. ?.jpg would
match a.jpg, 1.jpg, or F.jpg but not a1.jpg. Several ? wildcards
can be used so that ??.jpg would match any jpg file with a two
letter name.
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A good program to convert jpg to pdf would be the JPG to PDF
Converter. You can download it off of
www.go2pdf.com/jpg-to-pdf.html, by clicking on the link.