diff --git a/src/rexbacklight.c b/src/rexbacklight.c
index 4bde55f..ba4d6a9 100644
--- a/src/rexbacklight.c
+++ b/src/rexbacklight.c
@@ -24,8 +24,10 @@
 #include <dirent.h>
 #include <errno.h>
 
+//This is where backlight devices can be found in sysfs
 static const char* backlight_dir = "/sys/class/backlight/";
 
+//Print out usage message and GPL message if not caused by an error
 void usage(int exit_val){
 	fprintf(stderr, "Usage: rexbacklight [option]\n\n");
 
@@ -60,15 +62,28 @@ struct string_array get_backlight_sources(void){
 	struct dirent* dir;
 
 	fd = opendir(backlight_dir);
+	//If the dir can't be opened, return no backlight devices
 	if(!fd){
 		fprintf(stderr, "Unable to open '%s' for reading!\n", backlight_dir);
 		return (struct string_array){.list = NULL, .size = 0};
 	}
 
-	char** list = malloc(sizeof(const char*) * 8);
-	int i;
+	int i, list_size = 8;
+	char** list = malloc(sizeof(const char*) * list_size);
 
 	for(i = 0;(dir = readdir(fd));){
+
+		//Resize list if more than 8 backlight devices exist (not likely)
+		if(i > list_size){
+			char** tmp = malloc(sizeof(const char*) * (list_size += 8));
+			for(int j = 0;j < i;j++){
+				tmp[j] = list[j];
+			}
+			free(list);
+			list = tmp;
+		}
+
+		//Don't include "." or ".." in directory list
 		if(!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")){
 			continue;
 		}
@@ -82,16 +97,18 @@ struct string_array get_backlight_sources(void){
 	return (struct string_array){.list = list, .size = i};
 }
 
-
+//Delete the list of backlight devices
 void free_string_array(struct string_array* s){
 	for(int i = 0;i < s->size;i++)
 		free(s->list[i]);
 	free(s->list);
 }
 
-int get_brightness(const char* file){
-	FILE* bright = fopen(file, "r");
+//Read a float from a file
+float get_brightness(const char* file){
+	//Static buffer because it shouldn't be able to exceed 127 chars long
 	char buff[127];
+	FILE* bright = fopen(file, "r");
 	if(!bright){
 		fprintf(stderr, "Unable to open brightness file \"%s\"!\n", file);
 		return 0;
@@ -171,7 +188,7 @@ int main(int argc, char** argv){
 		return -1;
 	}
 
-	//save our starting directory so we can change to each backlight directory
+	//save our starting directory so we can change to each backlight directory (makes logic easier)
 	const char* starting_dir = getcwd(NULL, 0);
 
 	if(chdir(backlight_dir)){
@@ -186,7 +203,7 @@ int main(int argc, char** argv){
 			continue;
 		}
 
-		//Open brightness file for writing
+		//Write value to backlight files
 		int out = process_arg(argv[1], 0, get_brightness(backlight_file), get_brightness(max_backlight_file));
 		FILE* bright = fopen(backlight_file, "w+");
 		if(!bright){