extra 256 bytes assured for the output buffer.
BUFFER_MAGNIFICATION is an integer value specifying the approximate
output buffer magnification size compared with the bytes of input data
-text. If the value is zero, the CCL program can't execute `read' and
+text. It is assured that the actual output buffer has 256 bytes
+more than the size calculated by BUFFER_MAGNIFICATION.
+If the value is zero, the CCL program can't execute `read' and
`write' commands.
CCL_MAIN_CODE and CCL_EOF_CODE are CCL program codes. CCL_MAIN_CODE