Zepl notebooks allow you to declare an interpreter for each paragraph in the notebook. Setting the interpreter of a paragraph cell is the action which tells the notebook how to process any code or text entered into the paragraph. To use a particular interpreter is simple:
Choose an image in the notebook settings which contains the desired interpreters and libraries
2. Type the name of the interpreter as the first name of the paragraph
The interpreter section of this documentation helps explain which interpreters you can set in the notebook.