File name
Allows you to specify the file(s) from which to import assignments. You can import assignments from a Intel® Quartus® Prime Settings File (.qsf), Synplify Design Constraints File (.sdc), or an FPGA Xchange File (.fx).
You can also import settings from a Comma-Separated Value File (.csv), including Comma-separated Value Files previously exported from the Pin Planner or the Assignment Editor, and modified outside of the Intel® Quartus® Prime software.