[Importing objects (symbols/assets/objects??) from outside of Affinity Designer 2 (Mac version)]

Thank you for the quick response.  I was hoping the answer was as simple as copy/paste......appreciated the help!

[Importing objects (symbols/assets/objects??) from outside of Affinity Designer 2 (Mac version)]

I am new to Affinity Designer and am considering purchasing Affinity Designer 2 so please forgive my ignorance if this a very rudimentary question.

How would I import (as an example) math symbols from an external text document into Affinity Designer 2 (again Mac version) and save them for future use (not sure if they would be labeled as symbols or assets or something else...??).

Thank you for the assistance.