Logic synthesis is performed using Synopsys software (Synplify). If I want to change constraints, can I directly edit .sdc, .scf, or .tcl?

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Synopsis software (Synplify) is used for logic synthesis. Can I edit the .sdc, .scf, .tcl directly to change the constraints?

Although it is possible, Synplicity recommends using the SCOPE Constraint Editor window to modify constraints rather than using the generated .sdc, .scf, or .tcl files.

For details, refer to the Quartus II Handbook at the URL link below and search for the keyword “Passing TimeQuest SDC Timing Constraints to the Quartus II Software”.
https://www.altera.com/en_US/pdfs/literature/hb/qts/quartusii_handbook.pdf

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