* PRMDATA[0..6] socket data (max 7 bytes);
* PRMDATA[7] socket data length value (len is 0xff - PRMDATA[7])
*
- * The socket data length is computed by substracting the socket data length
+ * The socket data length is computed by subtracting the socket data length
* value from 0xFF.
* If the socket data len is greater 7, then PRMDATA can be used for special
* notifications (see iucv_sock_shutdown); and further,