{
    "id1": "index-en1",
    "id2": "index-en2",
    "id3": ["index-en3-a", "index-en3-b", "index-en3-c"],
    "id4": "index-en4",
    "exp1": "^help",
    "choices1": "a=a1,a2|b=b1|c"
}