Thank you Bahamuth ! :D
For the item, you can easily set the item to call common event and then use common event to open monster book.
I am pretty sure it is allowed for commercial game. By the way, Yoji Ojima is MV lead developer :D
Everytime I am creating new project in RPG Maker MV, 300+ MB resources are automatically copied to my project folder.
While it's true that we can manually remove the unused file by hand, it is quite error-prone process. And sometimes I just want to create quick demo for tutorial that doesn't...