diff --git a/source/regex.c b/source/regex.c
index af8b24a..6fdca64 100644
--- a/source/regex.c
+++ b/source/regex.c
@@ -7,7 +7,9 @@
 #include <assert.h>
 #include <string.h>
 
+// ------------------
 // ### Char tests ###
+// ------------------
 static bool is_quantifier(const char c) {
 	for (const char * s = "+*?"; *s != '\00'; s++) {
 		if (*s == c) {
@@ -31,7 +33,9 @@ bool is_magic(const char c) {
 
 
 
+// ----------------------
 // ### Internal Types ###
+// ----------------------
 typedef struct {
 	int in;
 	char input;
@@ -45,7 +49,9 @@ typedef struct {
 
 
 
+// ----------------------------------
 // ### Regex creation/destruction ###
+// ----------------------------------
 static int escape_1_to_1(const char c, char * whitelist) {
 	switch(c) {
 		case 't': {
@@ -327,8 +333,9 @@ int regex_free(regex_t * const regex) {
 
 
 
+// -----------------
 // ### Searching ###
-
+// -----------------
 static bool regex_assert(const regex_t * const  regex,
                          const char    * const string,
 				               int              state) {