Import Feed Text Dialog
Data|Captions|Feed Caption strings from Text file...
Lets you import feed text that will be used in the Caption Add Panel. If you like you can skip the import process, and paste or write your text here.
After the feed text is set, every time you click Add Caption in the Caption Add Panel, next line will be set as the caption text automatically.
This dialog is very similar to Import from Plain Text Dialog and shares its properties. The difference is that when you click OK the text is not converted to captions (hence there's no Caption Conversion Options) and set as the feed text instead.

Note: You can clear the feed text using Data|Captions|Clear Caption Feed Strings command.