diff --git a/draw_fpga.c b/draw_fpga.c
index f90f3d1..6a190ce 100644
--- a/draw_fpga.c
+++ b/draw_fpga.c
@@ -17,19 +17,17 @@
 #include <libxml/xpath.h>
 #include <libxml/xpathInternals.h>
 
-static const char* empty_svg =
-{
-	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
+static const xmlChar* empty_svg = (const xmlChar*)
+	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 	"<svg\n"
 	"   xmlns=\"http://www.w3.org/2000/svg\"\n"
 	"   version=\"2.0\"\n"
 	"   xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
-	"   viewBox=\"0 0 1000 1000\" width=\"1000\" height=\"1000\"\n"
-	"   id=\"fpga\">\n"
+	"   viewBox=\"0 0 1000 1000\" width=\"1000\" height=\"1000\">\n"
+	"   <rect width=\"100%\" height=\"100%\" style=\"fill:black;\"/>\n"
         "   <g id=\"root\" transform=\"translate(0,1000) scale(1,-1)\">\n"
         "   </g>\n"
-	"</svg>\n"
-};
+	"</svg>\n";
 
 int main(int argc, char** argv)
 {
@@ -37,20 +35,10 @@ int main(int argc, char** argv)
 	xmlXPathContextPtr xpathCtx = 0;
 	xmlXPathObjectPtr xpathObj = 0;
 
-	// create or overwrite fpga.svg
-	{
-		FILE* f = fopen("fpga.svg", "w+");
-		if (!f) {
-			fprintf(stderr, "Cannot create fpga.svg\n");
-			goto fail;
-		}
-		fprintf(f, empty_svg);
-		fclose(f);
-	}
 	xmlInitParser();
-	doc = xmlParseFile("fpga.svg");
+	doc = xmlParseDoc(empty_svg);
 	if (!doc) {
-		fprintf(stderr, "Unable to parse fpga.svg.\n");
+		fprintf(stderr, "Internal error %i.\n", __LINE__);
 		goto fail_xml;
 	}
 	xpathCtx = xmlXPathNewContext(doc);
@@ -79,13 +67,15 @@ int main(int argc, char** argv)
 
 		for (i = 0; i < 10; i++) {
 			new_node = xmlNewChild(xpathObj->nodesetval->nodeTab[0], 0 /* xmlNsPtr */, BAD_CAST "use", 0 /* content */);
-			xmlSetProp(new_node, BAD_CAST "xlink:href", BAD_CAST "lib.svg#square");
+			xmlSetProp(new_node, BAD_CAST "xlink:href", BAD_CAST "lib.svg#IOB");
 			xmlSetProp(new_node, BAD_CAST "x", xmlXPathCastNumberToString(50+i*50));
 			xmlSetProp(new_node, BAD_CAST "y", BAD_CAST "50");
+			xmlSetProp(new_node, BAD_CAST "width", BAD_CAST "50");
+			xmlSetProp(new_node, BAD_CAST "height", BAD_CAST "50");
 		}
 	}
 
-	xmlSaveFile("fpga.svg", doc);
+	xmlDocDump(stdout, doc);
 
 	xmlXPathFreeObject(xpathObj);
 	xmlXPathFreeContext(xpathCtx); 
@@ -98,6 +88,5 @@ fail_xml:
 	if (xpathCtx) xmlXPathFreeContext(xpathCtx); 
 	if (doc) xmlFreeDoc(doc); 
  	xmlCleanupParser();
-fail:
 	return EXIT_FAILURE;
 }
diff --git a/lib.svg b/lib.svg
index 3df5c66..6e29ce8 100644
--- a/lib.svg
+++ b/lib.svg
@@ -1,7 +1,7 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <svg xmlns="http://www.w3.org/2000/svg">
-  <g id="square">
-    <rect x="0" y="0" width="20" height="20"
-          style="fill: black; stroke-width: 2;"/>
-  </g>
+  <svg id="IOB" width="1000" height="1000" viewBox="0 0 1000 1000">
+    <rect x="100" y="100" width="800" height="800" style="fill:white;"/>
+    <text x="200" y="200">hi</text>
+  </svg>
 </svg>