The Import and Paste Special Choices dialog comes up when you import a file into a Prism data table, or use the Paste Special command. It has five tabs:

Source - The Source tab lets you choose between importing or pasting just the values, linking to a file, or embedding a data object.

View - The View tab lets you see the contents of the imported or pasted file, divided into columns.

Filter - The Filter tab let you choose which portions of the data file to import.

Placement - The Placement tab lets you rearrange your data as you import/paste it into Prism.

Info & Notes - The Info & Notes tab gives you tools to import sections of a text file directly into a Prism Info sheet.