How does slot attribute works in lightning-button?

See the Slot filling with required parameters section below Default value: This is the default value for the parameter when the end-user does not supply one

Action Slot - Drilling Jig The slot - drilling jig shown in the draw- ing is somewhat different in design , and much quicker in action than the usual type

action bank plus slot Salesforce Developer Guide further explains Slots as follows: “Add a slot action:new_opportunity size=small alternative-text=Banner

action money slot Computer Science > Computer Vision and Pattern Recognition · Title:Pyramid Region-based Slot Attention Network for Temporal Action Proposal