Here's an example AppleScript that loops through all the pages in the first VoodooPad document, and then creates a new document in TextEdit with the contents of all those pages.
set allText to ""
set pageMarker to "------------------------------------------"
tell application "VoodooPad"
tell document 1
repeat with i from 1 to number of items in pages
set pageText to text of page i
set pageName to name of page i
set allText to allText & return & pageMarker & return & pageName & return & pageText
end repeat
end tell
end tell
tell application "TextEdit"
tell application "TextEdit" to make new document at end of documents
tell application "TextEdit" to set text of document 1 to allText
activate
end tell