Question about actions = actions / closings in StockTradingEnvV2.step() (tutorial_this_works_1_18.ipynb)

Hello AI4Finance team,

First of all, thank you for providing the excellent tutorials and open-source implementations in FinRL — they are very helpful for reinforcement learning applications in finance!

I have a question regarding the notebook:
📍 FinRL-Tutorials/5-Others/tutorial_this_works_1_18.ipynb
Specifically in:
Part 5. Design Environment → class StockTradingEnvV2(gym.Env)

In the step(self, actions) function, I noticed the following line:
"actions = actions / closings"

Could you kindly explain the purpose of this line?

Is it intended to normalize the action values by the stock's closing prices?

Or does it serve a different function related to position sizing, portfolio allocation, or transaction cost handling?

I’d appreciate any clarification you could provide.

Thank you so much again for your amazing work!

Best regards