diff --git a/src/HeaderParser.c b/src/HeaderParser.c
index f7ce346..d0171ad 100644
--- a/src/HeaderParser.c
+++ b/src/HeaderParser.c
@@ -1,3 +1,26 @@
+/*
+ * Copyright (C) 2022-2023 Jordan Bancino <@jordan:bancino.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 #include <HeaderParser.h>
 
 #include <Memory.h>
diff --git a/src/include/HeaderParser.h b/src/include/HeaderParser.h
index 072db25..a0ee6e3 100644
--- a/src/include/HeaderParser.h
+++ b/src/include/HeaderParser.h
@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (C) 2022-2023 Jordan Bancino <@jordan:bancino.net>
  *
  * Permission is hereby granted, free of charge, to any person
diff --git a/tools/bin/td b/tools/bin/td
index 751e996..022675d 100644
--- a/tools/bin/td
+++ b/tools/bin/td
@@ -182,20 +182,28 @@ recipe_clean() {
     rm -r build
 }
 
-# Format the source code by updating the copyright headers and
-# then running indent(1) on each source code file.
-recipe_format() {
-    find . -name '*.c' -or -name '*.h' | while IFS= read -r src; do
+# Update copyright comments in sources and header files.
+recipe_license() {
+    find . -name '*.[ch]' | while IFS= read -r src; do
         if [ -t 1 ]; then
-            printf "FMT %s%*c\r" $(basename "$src") "16" " "
+            printf "LICENSE %s%*c\r" $(basename "$src") "16" " "
         fi
-        # Update the headers
         srcHeader=$(grep -n -m 1 '^ \*/' "$src" | cut -d ':' -f 1)
         head "-n$srcHeader" "$src" |
             diff -u -p - LICENSE.txt |
             patch "$src" | grep -v "^Hmm"
+    done
+    if [ -t 1 ]; then
+        printf "%*c\n" "50" " "
+    fi
+}
 
-        # Format the source code
+# Format source code files by running indent(1) on them.
+recipe_format() {
+    find . -name '*.c' | while IFS= read -r src; do
+        if [ -t 1 ]; then
+            printf "FMT %s%*c\r" $(basename "$src") "16" " "
+        fi
         if indent "$src"; then
             rm $(basename "$src").BAK
         fi
diff --git a/tools/src/hdoc.c b/tools/src/hdoc.c
index 54a5319..74fb530 100644
--- a/tools/src/hdoc.c
+++ b/tools/src/hdoc.c
@@ -108,7 +108,7 @@ main(int argc, char **argv)
     char comment[HEADER_EXPR_MAX];
     int isDocumented = 0;
 
-    Stream *in  = NULL;
+    Stream *in = NULL;
     Stream *out = NULL;
 
     int opt;
@@ -135,7 +135,7 @@ main(int argc, char **argv)
                     if (!in)
                     {
                         StreamPrintf(StreamStderr(), "Error: %s:%s",
-                            optarg, strerror(errno));
+                                     optarg, strerror(errno));
                         exit = EXIT_FAILURE;
                         goto finish;
                     }
@@ -168,7 +168,7 @@ main(int argc, char **argv)
                     if (!out)
                     {
                         StreamPrintf(StreamStderr(), "Error: %s:%s",
-                            optarg, strerror(errno));
+                                     optarg, strerror(errno));
                         exit = EXIT_FAILURE;
                         goto finish;
                     }
@@ -183,7 +183,7 @@ main(int argc, char **argv)
                 if (!*val || *val != '=')
                 {
                     StreamPrintf(StreamStderr(), "Bad register definition: %s",
-                        optarg);
+                                 optarg);
                     exit = EXIT_FAILURE;
                     goto finish;
                 }