How to create and encode such symbols?

Question

css

There is an inscape program, I opened fonts in svg genericons. And there, instead of letters like - "abc", there are encoded characters. How to do also?
Example: uniF100 - [] (icon)

Answer 1

Is it really banned in Google?) Here is the first link for the request "creating svg fonts":
ninniah.ru/sozdanie-simvolnogo-shrifta-v-inkscape.html
And a lot of other interesting things ..