diff --git a/tools/retro-embedimage.c b/tools/retro-embedimage.c
index c676d41..14d223d 100644
--- a/tools/retro-embedimage.c
+++ b/tools/retro-embedimage.c
@@ -1,9 +1,11 @@
-/*  This loads an image file and generates a C formatted
-    output. It's used to create the `image.c` that gets
-    linked into `rre`.
+/* RETRO ------------------------------------------------------
+  A personal, minimalistic forth
+  Copyright (c) 2016 - 2019 Charles Childers
 
-    Copyright (c) 2016-2019 Charles Childers
-*/
+  This loads an image file and generates a C formatted output
+  suitable for being linked into the virtual machine. It's
+  used to create the `image.c` that gets linked into `retro`.
+  ---------------------------------------------------------- */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -44,7 +46,10 @@ CELL ngaLoadImage(char *imageFile) {
 }
 
 void output_header(int size) {
-  printf("#include <stdint.h>\n#ifndef CELL\n#define CELL int32_t\n#endif\n");
+  printf("#include <stdint.h>\n");
+  printf("#ifndef CELL\n");
+  printf("#define CELL int32_t\n");
+  printf("#endif\n");
   printf("CELL ngaImageCells = %lld;\n", (long long)size);
   printf("CELL ngaImage[] = { ");
 }
diff --git a/tools/retro-muri.c b/tools/retro-muri.c
index a336193..aed4ce5 100644
--- a/tools/retro-muri.c
+++ b/tools/retro-muri.c
@@ -1,12 +1,11 @@
-/* retro-muri.c
-
-   Copyright (c) 2017-2020 Charles Childers
-   Copyright (c)      2019 Luke Parrish
-
-   This is the standard assembler for Nga. It's primarily used
-   to build the RETRO kernel (rx.muri).
-*/
+/* RETRO ------------------------------------------------------
+  A personal, minimalistic forth
+  Copyright (c) 2017 - 2019 Charles Childers
+  Copyright (c)      2019 Luke Parrish
 
+  This is the standard assembler for Nga. It's primarily used
+  to build the RETRO kernel (rx.muri).
+  ---------------------------------------------------------- */
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/tools/retro-unu.c b/tools/retro-unu.c
index b3bbadf..e4120d0 100644
--- a/tools/retro-unu.c
+++ b/tools/retro-unu.c
@@ -1,15 +1,14 @@
-/* retro-unu.c
+/* RETRO ------------------------------------------------------
+  A personal, minimalistic forth
+  Copyright (c) 2017 - 2020 Charles Childers
 
-   This is a tool to extract code blocks from a RETRO-flavored
-   Markdown source file.
-
-   Code blocks start and end with ~~~ and test blocks start
-   and end with ```, though this does support setting them
-   from the command line.
-
-   Copyright (c) 2017-2020 Charles Childers
-*/
+  This is retro-unu, a tool to extract code blocks from a
+  RETRO-flavored Markdown source file.
 
+  Code blocks start and end with ~~~ and test blocks start
+  and end with ```, though this does support setting them
+  from the command line.
+  ---------------------------------------------------------- */
 
 #include <stdio.h>
 #include <stdlib.h>