* Note that refcount can be at most 2, since during a free refcount=3
* might mean we have to allocate a new surface which might not always
* be available.
- * For example : we allocate three contigous surfaces ABC. If B is
+ * For example : we allocate three contiguous surfaces ABC. If B is
* freed, we suddenly need two surfaces to store A and C, which might
* not always be available.
*/