GGU-STRATIG: "Page format" menu item
This menu item allows you to adjust the height of the output sheet and the format of fold markers and page margins. The page width is defined via the menu item "Input/Overall view". The following dialog box opens:

The A3 format is set as default. The program automatically draws thin (cutting) borders around the page, which are required when using paper rolls on a plotter. The borders can be switched off in the "Preferences/General" menu item by deactivating the "With borders" check box.
The page height can be user-defined at any height in the uppermost input box. Below this it is possible for the program to automatically determine the page height by selecting the different page formats. When using large page formats it can be very useful to activate fold markers to aid in folding subsequent printouts.
"Page margins" defines the position of a frame as a distance to the borders. This frame encloses the subsequent diagram (= drawing area). This frame can be switched off by deactivating the "With margins" check box in the "Preferences/General" menu item.