Feature: Create things and required functions #3
Description
Is your feature request related to a problem? Please describe.
The instructions may require some more additional types of things and functions that are required for running all the future instructions.
Describe the solution you'd like
The existing instructions must be analysed and the signature must be written for each of them. Then, the needed types and functions must be created.
The list of them must be written here in the issue's comment section.