diff --git a/CODING b/CODING
index 898097e..f1d0795 100644
--- a/CODING
+++ b/CODING
@@ -15,8 +15,6 @@ We have the following conventions in our code:
 
 * Function names are all lower-case separated by underscores.
 
-* Beginning-of-line indentation via tabs, not spaces.
-
 * Preprocessor macros are always UPPERCASE.
   There are a few grandfathered exceptions: assert, panic,
   static_assert, offsetof.
diff --git a/README.info b/README.info
new file mode 100644
index 0000000..eaf6de5
--- /dev/null
+++ b/README.info
@@ -0,0 +1,4 @@
+Lab 1 : Tue 10:00 ~ 11:20
+Lab 2 : Tue 12:00 ~ 13:20
+Lab 3 : Wed 15:00 ~ 16:20
+Lab 4 : Fri 14:00 ~ 15:20
diff --git a/kern/monitor.c b/kern/monitor.c
index 4e00796..7156224 100644
--- a/kern/monitor.c
+++ b/kern/monitor.c
@@ -22,6 +22,7 @@ struct Command {
 	int (*func)(int argc, char** argv, struct Trapframe* tf);
 };
 
+// LAB 1: add your command to here...
 static struct Command commands[] = {
 	{ "help", "Display this list of commands", mon_help },
 	{ "kerninfo", "Display information about the kernel", mon_kerninfo },
@@ -58,7 +59,9 @@ mon_kerninfo(int argc, char **argv, struct Trapframe *tf)
 int
 mon_backtrace(int argc, char **argv, struct Trapframe *tf)
 {
-	// Your code here.
+	// LAB 1: Your code here.
+    // HINT 1: use read_ebp().
+    // HINT 2: print the current ebp on the first line (not current_ebp[0])
 	return 0;
 }
 
diff --git a/lib/printfmt.c b/lib/printfmt.c
index 28e01c9..802adcd 100644
--- a/lib/printfmt.c
+++ b/lib/printfmt.c
@@ -205,7 +205,7 @@ vprintfmt(void (*putch)(int, void*), void *putdat, const char *fmt, va_list ap)
 
 		// (unsigned) octal
 		case 'o':
-			// Replace this with your code.
+			// LAB 1: Replace this with your code.
 			putch('X', putdat);
 			putch('X', putdat);
 			putch('X', putdat);
diff --git a/student.info b/student.info
new file mode 100644
index 0000000..f3ede52
--- /dev/null
+++ b/student.info
@@ -0,0 +1,5 @@
+OSU  ID  (xxx-yyy-zzz)  : 933456789
+FLIP ID (e.g., jangye)  : jangye
+Name                    : Yeongjin Jang
+CS 444/544 ?            : 444
+Lab Class #             : Lab 1