If you are using a dialup connection, it is recommended that you first download the PDF in .zip format first.  Faster connections can view the PDF embedded in their web browser by selecting the PDF icon*.   Spectral Lines Newsletter No. 101 *Your browser may need to be configured in order to view a PDF embedded.     Adobe Acrobat Reader is required to view the documents.  Click this link to Adobe's site and download the free viewer if you don't already have it installed.