Hi Markus Yes, but with limitations. If you export map -f pdf, then you can indirectly influence the page size by adjusting the scale and where you place the header. Not as precise as you are wanting. If you export atlas -f pdf, then you can precisely specify the page size, as you have been attempting. The cave is then distributed across as many pages as is required. Disadvantages are that you cannot place headers and other objects on the pages. Have a look https://therion.speleo.sk/wiki/bds where there is some information. "A map output (not to be confused with a map object) is contained on a single 'page' and the size of the page is automatically made big enough to fit the cave by the software. A number of formats are supported but pdf seems to be the most comprehensive. Pdf maps can include graphics such as photos, logos, other pdf files or previously created cave maps. An atlas output cuts the cave up to fit a user defined 'paper size' and adds a navigation pane. Hyperlinks in the navigation pane and at the page edges facilitate rapid navigation. If multiple maps are selected in the thconfig file, then chapters are automatically created separating the maps. These may be different caves or different levels in the cave - with hyperlinks to navigate between different levels. Only pdf format is supported. Inserted graphic images are NOT supported." Also https://therion.speleo.sk/wiki/templates#atlas_specific which contains some useful atlas paper size layouts. Bruce From: Therion <therion-bounces@speleo.sk> On Behalf Of Markus Boldt via Therion Sent: Sunday, 1 July 2018 23:02 Hello, how is it possible to "say" Therion to make a PDF-File with for example a Size of DIN A4 (21 x 29,7 cm)? I have tried Page-setup 21 29.7 20 29 0.1 0.1 cm it doesn`t work I have tried Size 21 29.7 cm It doesn`t, too The command is ignored. Greetings Markus