def main(file):
doc = Document(file)
input = open(file).read()
border = re.compile('^-{20,}$', re.MULTILINE)
if re.search(border, input):
intro, text = re.split(border, input, 1)
else:
intro, text = "", input
doc.init(intro)
try:
doc.render(text)
except PressError as e:
e.report()
doc.save()
