This page shows the content of a tree. It is essentially a list of items, each of which consist of a key and a value.
The key is shown in the boxes on the left. It is a triple of a 64-bit id, an 8-bit type, and a 64-bit offset. What each of them means depends on the tree we're in. You can search for a key id by using the search field below.
The value is summarized to the right of the key. To see the value in more detail, unfold the key by clicking on it.
Finally, to the very right, we have the logical address of the metadata node which the item is stored in.
Extent(
    ExtentItem {
        refs: 2,
        generation: 7,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 285,
                offset: 0,
                count: 1,
            },
            SharedData {
                offset: 56590336,
                count: 1,
            },
        ],
    },
)02 00 00 00 00 00 00 00 07 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 1D 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 B8 00 80 5F 03 00 00 00 00 01 00 00 00
BlockGroup(
    BlockGroupItem {
        used: 8388608,
        chunk_objectid: 256,
        flags: 1,
    },
)00 00 80 00 00 00 00 00 00 01 00 00 00 00 00 00 01 00 00 00 00 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31637504,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 C0 E2 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 31752192,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 80 E4 01 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 2,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 554,
                offset: 0,
                count: 1,
            },
            SharedData {
                offset: 57868288,
                count: 1,
            },
        ],
    },
)02 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 2A 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 B8 00 00 73 03 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 560,
                offset: 0,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 30 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 567,
                offset: 0,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 37 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 660,
                offset: 0,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 94 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 661,
                offset: 0,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 95 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 662,
                offset: 0,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 96 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Extent(
    ExtentItem {
        refs: 1,
        generation: 9,
        flags: 1,
        block_refs: [
            ExtentData {
                root: 5,
                id: 678,
                offset: 0,
                count: 1,
            },
        ],
    },
)01 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 B2 05 00 00 00 00 00 00 00 A6 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00