Achei este script ... testa aí. Só tem que ajustar o número total de páginas do documento.
Ele gera um PDF a cada 5 páginas ... depois tu junta tudo (faz um roteiro com o Automator).
Applescript:
set totalPages to 340 set startPage to 0 set authorName to "DMT" tell application "VitalSource Bookshelf" activate repeat with theIncrementValue from startPage to totalPages - 1 by 5 if (theIncrementValue = 0) then set thisValue to "a" else set thisValue to theIncrementValue end if tell application "System Events" to keystroke "p" using command down tell application "System Events" to keystroke thisValue as string tell application "System Events" to keystroke tab tell application "System Events" to keystroke theIncrementValue + 5 as string tell application "System Events" to keystroke tab tell application "System Events" to keystroke return tell application "System Events" to keystroke return tell application "System Events" to keystroke "p" using command down tell application "System Events" to keystroke theIncrementValue as string tell application "System Events" to keystroke tab tell application "System Events" to keystroke tab tell application "System Events" to keystroke authorName tell application "System Events" to keystroke return delay 7 end repeat end tell [/CODE]