diff --git a/cdc.d b/cdc.d
index 5a26ca5..b535531 100755
--- a/cdc.d
+++ b/cdc.d
@@ -138,7 +138,7 @@ void main(string[] args)
 
     scope(failure){help(); core.stdc.stdlib.exit(-1);}
 
-    string[] extra_args = ["-w", "-wi"];
+    string[] extra_args = ["-gc", "-w", "-wi"];
 
     args = args[1 .. $];
     foreach(arg; args)
@@ -154,7 +154,7 @@ void main(string[] args)
     }
     if(args.length > 0 && args[$ - 1][0] != '-'){target = args[$ - 1];}
 
-    string[] dbg      = ["-gc", "-debug"];
+    string[] dbg      = ["-debug"];
     string[] optimize = ["-O", "-inline", "-release"];
     string[] lib_src  = ["dyaml/", "yaml.d"];
 
diff --git a/examples/yaml_bench/Makefile b/examples/yaml_bench/Makefile
index 6fc6a4b..3aacd69 100644
--- a/examples/yaml_bench/Makefile
+++ b/examples/yaml_bench/Makefile
@@ -1,5 +1,5 @@
 main:
-	dmd -w -I../../ -L-L../../ -L-ldyaml yaml_bench.d
+	dmd -w -gc -I../../ -L-L../../ -L-ldyaml yaml_bench.d
 
 clean:
 	rm yaml_bench yaml_bench.o
diff --git a/examples/yaml_bench/yaml_bench.d b/examples/yaml_bench/yaml_bench.d
index 6d05072..6689ea6 100644
--- a/examples/yaml_bench/yaml_bench.d
+++ b/examples/yaml_bench/yaml_bench.d
@@ -1,8 +1,10 @@
 
 //Benchmark that loads, and optionally extracts data from and/or emits a YAML file. 
 
+import std.conv;
 import std.datetime;
 import std.stdio;
+import std.string;
 import yaml;
 
 ///Print help information.
@@ -18,7 +20,8 @@ void help()
         "Available options:\n"
         " -h --help          Show this help information.\n"
         " -g --get           Extract data from the file (using Node.get()).\n"
-        " -d --dump          Dump the loaded data (to YAML_FILE.dump).\n";
+        " -d --dump          Dump the loaded data (to YAML_FILE.dump).\n"
+        " -r --runs=NUM      Repeat the benchmark NUM times.\n";
     writeln(help);
 }
 
@@ -56,16 +59,19 @@ void main(string[] args)
 {
     bool get = false;
     bool dump = false;
+    uint runs = 1;
     string file = null;
 
     //Parse command line args
     foreach(arg; args[1 .. $]) 
     {
-        if(arg[0] == '-') switch(arg) 
+        auto parts = arg.split("=");
+        if(arg[0] == '-') switch(parts[0]) 
         {
             case "--help", "-h": help(); return;
             case "--get",  "-g": get = true; break;
             case "--dump", "-d": dump = true; break;
+            case "--runs", "-r": runs = to!uint(parts[1]); break;
             default: writeln("\nUnknown argument: ", arg, "\n\n"); help(); return;
         }
         else
@@ -89,14 +95,17 @@ void main(string[] args)
 
     try
     {
-        auto nodes = Loader(file).loadAll();
-        if(dump)
+        while(runs--)
         {
-            Dumper(file ~ ".dump").dump(nodes);
-        }
-        if(get) foreach(ref node; nodes)
-        {
-            extract(node);
+            auto nodes = Loader(file).loadAll();
+            if(dump)
+            {
+                Dumper(file ~ ".dump").dump(nodes);
+            }
+            if(get) foreach(ref node; nodes)
+            {
+                extract(node);
+            }
         }
     }
     catch(YAMLException e)
diff --git a/examples/yaml_gen/config.yaml b/examples/yaml_gen/config.yaml
index 5c54e1b..910b637 100644
--- a/examples/yaml_gen/config.yaml
+++ b/examples/yaml_gen/config.yaml
@@ -1,8 +1,9 @@
 root-type:              seq
 documents:              2
 complex-keys:           false
-min-nodes-per-document: 512 
-encoding:               utf-32
+collection-keys:        false
+min-nodes-per-document: 65536 
+encoding:               utf-8
 indent:                 4
 text-width:             40
 
diff --git a/examples/yaml_gen/yaml_gen.d b/examples/yaml_gen/yaml_gen.d
index 9bc5630..0bb082c 100644
--- a/examples/yaml_gen/yaml_gen.d
+++ b/examples/yaml_gen/yaml_gen.d
@@ -155,7 +155,8 @@ Node genBinary(bool root = false)
 
 Node nodes(in bool root, Node range, in string tag, in bool set = false)
 {
-    auto types = typesCollection ~ (set ? typesScalarKey : typesScalar);
+    auto types = config["collection-keys"].as!bool ? typesCollection : [];
+    types ~= (set ? typesScalarKey : typesScalar);
 
     Node[] nodes;
     if(root)