Add radical help screen content

Julien LepillerSun Jun 07 00:49:57+0200 2020

3e16433

nani/app/furiganatextview/src/main/res/values
namelast commitdate
attrs.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019
strings.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019