printPageNumbers --> pageNavigation (#183)

pkg/manifest/a11y.go

@@ -283,9 +283,9 @@ const (
 	// The work includes an index to the content.
 	A11yFeatureIndex A11yFeature = "index"
 
-	// The work includes equivalent print page numbers. This setting is most commonly used
-	// with ebooks for which there is a print equivalent.
-	A11yFeaturePrintPageNumbers A11yFeature = "printPageNumbers"
+	// The resource includes a means of navigating to static page break locations.
+	// The most common way of providing page navigation in digital publications is through a page list.
+	A11yFeaturePageNavigation A11yFeature = "pageNavigation"
 
 	// The reading order of the content is clearly defined in the markup
 	// (e.g., figures, sidebars and other secondary content has been marked up to allow it

pkg/streamer/a11y_infer.go

@@ -114,13 +114,13 @@ func inferA11yMetadataFromManifest(mf manifest.Manifest) *manifest.A11y {
 		}
 	}
 
-	if mf.TableOfContents != nil && len(mf.TableOfContents) > 0 {
+	if len(mf.TableOfContents) > 0 {
 		addFeature(manifest.A11yFeatureTableOfContents)
 	}
 
 	if mf.ConformsTo(manifest.ProfileEPUB) {
 		if _, hasPageList := mf.Subcollections["pageList"]; hasPageList {
-			addFeature(manifest.A11yFeaturePrintPageNumbers)
+			addFeature(manifest.A11yFeaturePageNavigation)
 		}
 
 		for _, link := range allResources {

pkg/streamer/a11y_infer_test.go

@@ -295,7 +295,7 @@ func TestInferFeaturePageList(t *testing.T) {
 		},
 		ReadingOrder: []manifest.Link{newLink(mediatype.HTML, "html")},
 	}
-	assertFeature(t, m, manifest.A11yFeaturePrintPageNumbers)
+	assertFeature(t, m, manifest.A11yFeaturePageNavigation)
 }
 
 // If the publication contains any resource with MathML (check for the presence