I believe the following may be bugs in Drago, based on the output seen at http://www.plomp.com/shygost/lesson-03t.pdf, mentioned in topic:281.
At less in this case, there are not bugs. The pdf file is extracted from a sgf file which is more a sequence of positions drawn with setup commands than a standard sequence of moves. Just refer to the original sgf file http://tengen.bur.st/lesson-03t.sgf
Note this file has no move and to export it to pdf, it has been necessary to create some by adding pass moves at every nodes.
Drago 2.10 is able to produce lighter pdf. A 225 kb file is available at http://www.geocities.com/wwwdrago/Pdf/lesson-03t.pdf
Drago 2.10 will be released soon and is available now as a beta release at http://www.geocities.com/wwwdrago/Beta/SetupDrago0210b.zip.
Any comment welcome.
Gilles