https://www.mathworks.com/help/simulink/ug/tutorial-creating-a-custom-block.html
Design and Create a Custom Block - MATLAB & Simulink
Build a custom block using a Level-2 MATLAB S-function.
create a custom blockdesignmatlabsimulink
https://www.drupal.org/docs/creating-modules/creating-custom-blocks/create-a-custom-block-plugin
Create a custom block plugin | Creating custom blocks | Drupal Wiki guide on Drupal.org
Oct 27, 2024 - Blocks in Drupal are instances of the block plugin.
create a custom block
https://securitydocs.cisco.com/docs/umbrella-sig/olh/150737.dita
Create a Custom Block Page
create a custom block