Dear developers, I'd realized that the Mac OS gretl web page doesn´t have the "Optional extras to install" links (like X12 ARIMA and TRAMO/SEATS). I know that Mac/gretl users are a few part of the gretl community but I suppose these features (the web links) would be great for us (Mac/gretl users). Best, Henrique C. de Andrade Doutorando em Economia Aplicada Universidade Federal do Rio Grande do Sul www.ufrgs.br/ppge