Typeset and calculate invoices according to Venezuelan law
Description
'factura' is the Spanish word for 'invoice', so this is a LaTeX
class for typesetting and calculating invoices, taking into
account requirements of SENIAT legislation (tax collector
entity on the Bolivarian Republic of Venezuela). However, its
use is not restricted to Venezuela because all variables and
the displayed text can be redefined by invoking commands or
editing.
