Many thanks Chad!
Now it works as required (no border line is printed into a PDF file, only the content surrounded by a border line).
Now, the staking out design (in slovakian: VYTYČOVACÍ NÁČRT) fullfils all the norms required by the cadastre authority in Slovakia.
Just one remark and maybe some stimulation to streamline/simplify such feature in TBC:
It would be much more easier to invent a check box (option) when printing a sheet or sheets into a PDF file with a text
like INCLUDE BORDER LINE FOR PRINT/EXPORT.
When such check box would be checked, the border line would be printed/exported to the PDF file
along with its content.
When the check box would be unchecked, the border line itself would NOT be printed/exported to the PDF file
(only content within the border line would be printed/exported).
Again – many thanks for your valuable help!
Best wishes!
Martin