Jasper server Ad-hoc editor enhancement to properly use templates for different paper formats.
I cannot find any support in Ad-hoc editor for different paper formats (e.g. A4 Landscape).
You have the possibility to save generated ad-hoc view as a report with using of template. There are some specific formats templates delivered by JRS installation. You can use any one to create the report. But when you want to export it to specific format, most probably it will not fit to page (of chosen template format).