Interesting. Word seems to use ASCII CR as paragraph break, so does it use ASCII LF or ASCII FF as page break? (There is also a forced end-of-line produced by Shift-Enter that does not start a new paragraph. Simply pressing Enter actually starts a new paragraph, which starts a new line as a side-effect.)

If we want to consider producing DOCX, it would be fairly easy to input AAA [Control-Enter to insert a page break] BBB and see what turns up in document.xml. Word DOC format uses Microsoft's "OLE Container" format, which turns out to be a miniature FAT filesystem, complete with its own allocation tables, and (if I remember correctly) a second FAT filesystem with smaller blocks stored inside a "file" in the outer container file. At least they only did that to one level of recursion, instead of producing a "filesystems all the way down" crawling horror.

Or just look up the XML to do what you want:

<?xml version="1.0" encoding="UTF-8"?>
<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingm
+l/2006/main" xmlns:m="http://schemas.openxmlformats.org/officeDocumen
+t/2006/math" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:
+r="http://schemas.openxmlformats.org/officeDocument/2006/relationship
+s" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:ve="http://schemas.o
+penxmlformats.org/markup-compatibility/2006" xmlns:w10="urn:schemas-m
+icrosoft-com:office:word" xmlns:wne="http://schemas.microsoft.com/off
+ice/word/2006/wordml" xmlns:wp="http://schemas.openxmlformats.org/dra
+wingml/2006/wordprocessingDrawing">
   <w:body>
      <w:p w:rsidR="00D479B1" w:rsidRDefault="00D479B1">
         <w:r>
            <w:t>1234</w:t>
         </w:r>
      </w:p>
      <w:p w:rsidR="00D479B1" w:rsidRDefault="00D479B1">
         <w:r>
            <w:t>5678</w:t>
         </w:r>
      </w:p>
      <w:sectPr w:rsidR="00D479B1" w:rsidSect="00D479B1">
         <w:pgSz w:w="11906" w:h="16838" />
         <w:pgMar w:top="1440" w:right="1800" w:bottom="1440" w:left="
+1800" w:header="708" w:footer="708" w:gutter="0" />
         <w:cols w:space="708" />
         <w:docGrid w:linePitch="360" />
      </w:sectPr>
   </w:body>
</w:document>
[download]

becomes:

<?xml version="1.0" encoding="UTF-8"?>
<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingm
+l/2006/main" xmlns:m="http://schemas.openxmlformats.org/officeDocumen
+t/2006/math" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:
+r="http://schemas.openxmlformats.org/officeDocument/2006/relationship
+s" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:ve="http://schemas.o
+penxmlformats.org/markup-compatibility/2006" xmlns:w10="urn:schemas-m
+icrosoft-com:office:word" xmlns:wne="http://schemas.microsoft.com/off
+ice/word/2006/wordml" xmlns:wp="http://schemas.openxmlformats.org/dra
+wingml/2006/wordprocessingDrawing">
   <w:body>
      <w:p w:rsidR="00D479B1" w:rsidRDefault="00D479B1">
         <w:r>
            <w:t>1234</w:t>
         </w:r>
      </w:p>
      <w:p>
          <w:r>
            <w:br w:type="page" />
          </w:r>
      </w:p>
      <w:p w:rsidR="00D479B1" w:rsidRDefault="00D479B1">
         <w:r>
            <w:t>5678</w:t>
         </w:r>
      </w:p>
      <w:sectPr w:rsidR="00D479B1" w:rsidSect="00D479B1">
         <w:pgSz w:w="11906" w:h="16838" />
         <w:pgMar w:top="1440" w:right="1800" w:bottom="1440" w:left="
+1800" w:header="708" w:footer="708" w:gutter="0" />
         <w:cols w:space="708" />
         <w:docGrid w:linePitch="360" />
      </w:sectPr>
   </w:body>
</w:document>
[download]

See also the other links already provided in this thread, and their associated links. To be honest your work flow ('I'm using Perl to scrape text from a JavaScript that printed out one page at a time..') seems somewhat convoluted, but you don't go into much detail.