Initial commit: Klammertext source distribution

Curated source subset assembled by klammertext-dev's doc/make_dist.sh: the Klammermachine (mac), the Standard Klammer Set (sks), the commands (com), editor plugins and install guides (doc), a test subset (tst), and lib/bin placeholders. Builds with 'make -C com'.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

sks/document/js/show_links.js

@@ -0,0 +1,44 @@
+
+function show_link_boxes(show) {
+    K.map("a", function(elt) {
+        if (show) {
+            K.remove_class(elt, "undisplayed_link");
+            K.add_class(elt, "displayed_link");
+            localStorage.setItem("klammertext_links", "true");
+        } else {
+            K.remove_class(elt, "displayed_link");
+            K.add_class(elt, "undisplayed_link");
+            localStorage.setItem("klammertext_links", "false");
+        }
+    });
+    K.map(".pagelink", function(elt) {
+        if (show) {
+            K.remove_class(elt, "undisplayed_link");
+            K.add_class(elt, "displayed_link");
+        } else {
+            K.remove_class(elt, "displayed_link");
+            K.add_class(elt, "undisplayed_link");
+        }
+    });
+}
+
+window.addEventListener("load", function (event) {
+    K.get("#linkshow_check").addEventListener("click", function (event) {
+        let box = K.get("#linkshow_check");
+        if (K.attr(box, "active") === "false") {
+            K.attr(box, "active", "true");
+            show_link_boxes(true);
+        } else {
+            K.attr(box, "active", "false");            
+            show_link_boxes(false);
+        }
+
+    });
+    /*
+    K.get("#linkshow_check_label").addEventListener("click", function (event) {
+        K.get("#linkshow_check").click();
+    });
+    */
+
+    define_keypress("L", "#linkshow_check");
+});