{SC_LIB_SCRIPTCASE} is path to scriptcase external library. What is for public external Library?
The path that Im searching is {SC_LIB_PUBLIC}
Regards
Libraries are used within a project, you can add bootstrap as a library for example.
Best you watch the video there libraries are used and mentioned a bit, should tell u all u need to know:
https://www.youtube.com/watch?v=EKujr4m3MB0