1. How do you specify the need to print ONLY the area delineated by the baseboard? Not the entire work space.
2. How do you get it to print to scale?
I am working on an iMac and print to A4 paper on a Brother Lazer.
At this point the entire document is printed, however there's an open to-do item to enable printing of just a section of the layout.
(..there's also an open feature request for commenting/voting at https://bit.ly/3i3La8d)
We're looking into addressing this in a future update!
In order to print to scale (1:1) you can select the 1:1 option as Zoom Factor in the RailModeller Pro Print Settings:
The "Image Export and Printing" section in the manual also provides additional information!