ace maxLines

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/ace/1.1.3/ace.js"></script>
<div id="editor">a
b
c
d
a
b
c
d
a
b
c
d
a
b
c
d
</div>

CSS

#editor {
    border: 1px solid black;
    margin-bottom: 5px;
    height: 200px;
    width: 300px;
}

JavaScript

var editor = ace.edit('editor')
editor.setOptions({
    maxLines: 32000
});