diff --git a/makefile b/makefile
index cb9b6fb..6486fa6 100644
--- a/makefile
+++ b/makefile
@@ -16,8 +16,15 @@ page.o: page.c page.h line.h
 	$(CC) $(CFLAGS) -c page.c
 
 # '$<' expands to first prerequisite file
+# NOTE: this rule is already implicit
 %.o: %.c %.h
 	$(CC) $(CFLAGS) -c $< -o $@ 
-	
+
+.PHONY: cleanall clean cleantxt
+cleanall: clean cleantxt
+
 clean:
 	rm -f $(OBJS) text
+
+cleantxt:
+	rm -f *.txt