# Introduction
The main window is fixed on the screen, providing a window for batch operations, management, and use of clipboard records.
Filter: Support filtering by App, filtering current App, filtering favorite list, and smart list filtering based on multiple conditions.
Search: Quickly search within the filtering scope.
Select: Left-click for single selection; ⌘+click to add an item; ⇧+click to select all items between two selections.
Use: Double click to paste a single item, drag and drop or right-click menu for batch operations on multiple items.