(31337_65852115931553, `Auto size is a feature that gives you more flexibility when creating custom components. For example, this schematic is a counter that works at any size and has a configurable increment:
[image="example.png"]

Notice some of the size labels have a different background color. This is because they have been set to be automatically inferred. You can set size to be auto inferred using this button.
[image="setting.png"]

Generally speaking, most components can have auto size enabled, and when that's enabled, will take on the size of the wire that leads to one of their input pins. Which pin an auto sized component takes its size from is different for each component. For example the adder above, will take the largest size of its two numeric inputs while ignoring any potential wire connected to the carry in pin.

For technical reasons this doesn't work for memory components. To get an auto sized register or delay line, you can use the special versions of them that have a blue pin, as seen in the example above. Blue pins are generally for features related to auto size.`)