Jupyter cell output character truncation limit and configurability

Goal

Determine whether Jupyter's default output truncation applies to each cell's combined output or to individual output streams such as stdout, stderr, and display_data, and whether the character ceiling can be adjusted without disabling the Show All behavior.

Constraints and uncertainty

Documentation describes automatic truncation around 10,000 characters per cell with a Show All link, but does not clearly state whether the limit is enforced by the notebook frontend, JupyterLab, or the kernel, nor whether it is exposed as a configurable option in Jupyter Notebook 7.x or JupyterLab 4.x.

Specific questions:

• Is the truncation limit measured per cell output bundle or per individual MIME representation?
• Can the limit be raised through notebook configuration or frontend settings without turning off truncation entirely?
• Does the limit differ between the classic Notebook interface and JupyterLab for the same kernel?