* of length self::SEGSIZE. The result is cached. This is a helper function
* for getBlock().
*
- * If there are not enough bytes in the file to satsify the request, the
+ * If there are not enough bytes in the file to satisfy the request, the
* return value will be truncated. If a request is made for a segment beyond
* the end of the file, an empty string will be returned.
* @return string