diff --git a/as/test/test.s b/as/test/test.s
index edca24a..66ca095 100644
--- a/as/test/test.s
+++ b/as/test/test.s
@@ -1,5 +1,22 @@
+;;; This file is meant to test the parsing capabilities of the assembler.
+;;; It should contain every address mode to its parsing, as well as a
+;;; range of instructions to test.
+
+;;; When the assembler supports macros, those will be tested here as well.
+
 start:
 	lda #$32 					; Store $32 in a
 	tax							; Transfer a to x
 	stx $200					; Store x at $200
 	jmp ($FFAA)					; Jump to the address at $FFAA
+second_label:
+	lda $30, X
+	inc
+	adc #$3
+	bne start
+	jsr another_subroutine
+	tax
+	hlt
+
+another_subroutine:
+	ret