Is it necessary to add the word "magical" on dmg type?

Is it necessary to add the word "magical" on dmg type? Attachment 67540

What if the weapon does extra dmg like a Vicious Weapon? Would you add the word "magical twice? Attachment 67541

For D&D 5E game system, you would need to add "magic" to the damage type for each non-magical damage type.

For the vicious weapon example, you would need:
1d4+Dex slashing,magic
2d6 slashing,magic

Or include all 3 dice in a single line
1d4+2d6+Dex slashing,magic

Regards,
JPG

Thank you