Inputs are data that you pass into a skill before running it.
"['apple', 'banana', 'mango']"
or apple, banana, mango
and Autotab will parse it into a list for you. The same goes for things like forms, or other data that you want to load in in a more structured way than text.
For an input that has already been created, or one that you want to have Autotab parse in a specific way, you can create a “Reasoning” step that references the input and write a prompt like “Load the data from @input”.