Mods/datapacks allow you to copy items, entities or blocks in the form of an item or book with a command to receive it. With its help, you can speed up your work, find out what command is required to get something, and you can also transfer blocks or entities to other worlds by simply copying a command from the book and pasting it where you need it. The mod/datapack is still being developed, but most of the functionality is present.

To copy data about a block without properties (such as rotation or water filling) to the workbook, you need to use this command
/trigger block_book_np
To copy data about a block with properties to a book, you need to use this command
/trigger block_book_p
To copy a block to inventory without properties you need to use this command
/trigger block_item_np
To copy a block to inventory with properties you need to use this command
/trigger block_item_p
To copy an entity in the form of a book, you need to use this command
/trigger entity_book
To copy an entity in the form of a spawn egg you need to use this command
/trigger entity_egg
To copy an item as a book you need to use this command
/trigger item_book