digraph webmail {
login -> inbox
login -> register
register -> welcome
register -> register [label="invalid fields", fontsize=11]
welcome -> inbox
inbox -> edit_account
edit_account -> inbox
inbox -> login [label="logout", fontsize=11]
inbox -> search_results
inbox -> inbox [label="delete,\nsort,\nfetch mail,\nmove folder", fontsize=11]
inbox -> inbox [label="change folder", fontsize=11]
inbox -> compose
compose -> compose [label="upload,\nspell check", fontsize=11]
compose -> inbox [label="cancel,\nsend", fontsize=11]
inbox -> view_msg
view_msg -> compose [label="reply", fontsize=11]
view_msg -> inbox [label="delete", fontsize=11]
}