[CW] Meaning of di-di-di-dah-di

[je1trv at a1lab.jp]

Hello 
As you know well, in case of International Morsecode,
the code of 8 dits ........ or di-di-di-di-di-di-di-di
is the code for "correction".

On the other hand, in case of Japanese Morsecode (WABUN), 
the code ...-. or di-di-di-dah-di
means "correction".

But we sometimes hear di-di-di-dah-di sent by non-JA stations.
So, I'd like to ask anyone outside JA, how did you know that code and
meaning of that code. 
Is there any book or website which shows that code for correction?

Tks in advance
73 Atsu, JE1TRV