ISO 8859-1 is the ISO standard Latin-1 character set and encoding format. CP1252 is what Microsoft defined as the superset of ISO 8859-1. Thus, there are approximately 27 extra characters that are not included in the standard ISO 8859-1.
When using Latin-1 character encoding, it is recommended that you also refer to the following documents:
http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=28245&ICS1=35&ICS2=40&ICS3= ().