1---
2margins: { top: 4, side: 0, bottom: 4 }
3outlines:
4    default: { width: 120, height: 52 }
5
6views:
7    base:
8        - "1 2 3"
9        - "4 5 6"
10        - "7 8 9"
11        - "BackSpace 0 Return"
12
13buttons:
14    BackSpace:
15        icon: "edit-clear-symbolic"
16        action: erase
17    Return:
18        icon: "key-enter"
19        keysym: "Return"
20
21