modelAttribute="record"作用

modelAttribute="record"的作用是什么哦？
<form:form id="admin-form" name="addForm" action="/claim_voucher/check" modelAttribute="record">
    <form:hidden path="claimVoucherId" />
    <div class="panel-body bg-light">
        <div class="section">
            <label for="comment" class="field prepend-icon">
                <form:input path="comment" cssClass="gui-input" placeholder="备注..."/>
                <label for="comment" class="field-icon">
                    <i class="fa fa-lock"></i>
                </label>
            </label>
        </div>
        <div class="panel-footer text-right">