With the 'type' attribute you can set the block's type.
Valid values are 'normal', 'door', 'stairs', 'fence', 'slab', 'crosstexture', 'torch', 'chest', 'pressureplate', 'pane', 'ladder', 'trapdoor', 'fencegate'
Default value: 'normal'
type="stairs";
type="pressureplate";