What is 'selector box' in SAP CA-WUI - WebClient UI?

selector box - Overview

• Component: CA-WUI

• Component Name: WebClient UI

• Description: A UI element located on the left side of each table row that is used to select or deselect table rows.

selector box - Details

• 
  Key Concepts: 
  A selector box is a UI element in the SAP WebClient UI (CA-WUI) that allows users to select one or more items from a list of available options. It is similar to a drop-down list, but it allows users to select multiple items at once. 
  
  How to use it: 
  To use a selector box, users must first open the WebClient UI and navigate to the selector box. Once there, they can select one or more items from the list of available options. The selected items will be highlighted in blue. 
  
  Tips & Tricks: 
  When using a selector box, it is important to remember that only one item can be selected at a time. To select multiple items, users must hold down the Ctrl key while clicking on each item they wish to select. 
  
  Related Information: 
  Selector boxes are just one of many UI elements available in the SAP WebClient UI. Other elements include input fields, checkboxes, radio buttons, and more. For more information about these elements and how to use them, please refer to the SAP documentation.