When we call a function As
where 1: paste(path, collapse = " | ") where 2: xpathApply.XMLInternalDocument(doc, path, fun, ..., namespaces = namespaces, sessionEncoding = sessionEncoding, addFinalizer = addFinalizer) where 3: xpathApply(doc, path, fun, ..., namespaces = namespaces, sessionEncoding = sessionEncoding, addFinalizer = addFinalizer) where 4: getNodeSet(doc, "//page") where 5: getPages(doc) where 6: lapply(getPages(doc), getTextByCols) where 7: pdfText(doc) where 8: unlist(text) where 9: strsplit(unlist(text), "[[:space:][:punct:]]+") where 10: unlist(strsplit(unlist(text), "[[:space:][:punct:]]+")) where 11: getDocWords(doc) where 12: isScanned2(doc) where 13: getDocTitle("LatestDocs/PDF/1066657133/Nishiura-2016-Preliminary estimation of the ba.xml")