constructor param titl titl help window help box titl titl dimens scr size toolkit toolkit screen size set locat scr size width scr size height content pane set layout border layout set size pane editor pane page length page length pane editor pane pane set edit pane set size pane add hyperlink listen url pane url pane url url page malform url except defin log lp log granular type statement lp log local nest statement log warn page url malform page endif pane url pane set page pane url io except defin log lp log granular type statement lp log local nest statement log warn attempt read bad url pane url endif defin log lp log granular type statement log warn couldn page endif current pane scroll pane scroll pane pane scroll pane scroll pane pane pane scroll pane set vertic scroll bar polici scroll pane vertic scrollbar pane scroll pane set prefer size dimens pane scroll pane set minimum size dimens tab add tab page pane scroll pane page content pane add tab border layout center 