How do you edit font/text?

In PTC, it was easy to edit fonts. All you had to do was open CHRED and switch to BF. I don't know how to do anything using SmileBASIC. Why is it so different?

In the paint tool, press Y to open the file menu, and then press it again to load the fonts to the current GRP selected.

Also, to load the fonts, do LOAD "GRPF:CUSTOMFONT",0 _{(In case you didn't know.)}