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There are many people here who have several accounts. The most of the additional accounts are existing for certain reasons, e.g. voting bots. The more sophisticated users have scripts running which interact with all actions on the blockchain. But this is not my experience. I have finished programming about 25 years ago. With blockchain operations it is possible to transfer steem power (which is normally bound) to the steem power of other accounts. But I don't know exactly how this works.
The blockchain operation can be seen in the steemd.com log :

Hi!

I am not really sure how to read this list. Could you elaborate a bit.

You simply have to open //steemd.com/@tamim . There you can see all interactions on your account.

Ah, I see. Thank you, @freiheit50!