To build the examples:

make examples

To run:

./examples/bin/wroot

it produces a wroot.root file with histos and ntuples in it. To see the "keys" in it:

./examples/bin/root_ls wroot.root

To read it with inexlib:

./examples/bin/rroot wroot.root

With CERN-ROOT around, you can do:

<source setup CERN-ROOT>
root examples/read_wroot_root.C

Also:

./examples/bin/wroot_tree
./examples/bin/root_ls wroot_tree.root

With CERN-ROOT around, you can do on the wroot_tree.root:

<source setup CERN-ROOT>
root read_wroot_tree_root.C