jQuery Grid Plugin - jqGrid

I am new to web programming.  

I am using jqGrid.  I have the grid functioning and have an add dialog working.

I would like to change some of the attributes of the elements on the modal dialog.

For instance:  I have a text box for a description field.  I would like this box to show up with multiple lines and wrap the data.

From my research I think that there is probably an editoption that would accomplish this but the documentation on editoptions does not appear to be complete.  

The documentation says:

In this case you can set any other valid attribute for the editable element. For example, if the element is edittype:'text', we can set size, maxlength, etc. attributes. Refer to the valid attributes for the element

but I can't seem to find documentation on what the valid attributes are for the element type textbox.

I have been able to change the width using the size attribute.  I have tried using height as an attribute but that doesn't work.

Any help would be greatly appreciated.