(optional) The name of the field in the grid's Ext.data.Store's Ext.data.Record definition from which to draw the column's value. If not specified, the column's index is used as an index into the Record's data Array.
(optional) True if sorting is to be allowed on this column. Defaults to the value of the defaultSortable property. Whether local/remote sorting is used is specified in Ext.data.Store.remoteSort.
(optional) The name of the field in the grid's Ext.data.Store's Ext.data.Record definition from which to draw the column's value. If not specified, the column's index is used as an index into the Record's data Array.
(optional) Defaults to the column's initial ordinal position. A name which identifies this column. The id is used to create a CSS class name which is applied to all table cells (including headers) in that column.
(optional) A function used to generate HTML markup for a cell given the cell's data value. If not specified, the default renderer uses the raw data value.
(optional) True if sorting is to be allowed on this column. Defaults to the value of the defaultSortable property. Whether local/remote sorting is used is specified in Ext.data.Store.remoteSort.