Variable: mm-codepage-iso-8859-list

A list of Windows codepage numbers and iso-8859 charset numbers.

If an element is a number corresponding to a supported windows
codepage, appropriate entries to `mm-charset-synonym-alist' are
added by `mm-setup-codepage-iso-8859'. An element may also be a
cons cell where the car is a codepage number and the cdr is the
corresponding number of an iso-8859 charset.