Many times when I paste from Internet, the lines are joined and the text does not look same. Why?

This is a browser problem. The browser does not copy “rich text” to the clipboard with proper line breaks. By default, WhizFolders tries to paste rich text and that is wrong.

You can instead use “Paste Plain Text” operation which will put the line breaks properly. You can also try Paste Special in the editor and then select Unformatted Text to be pasted.