cleaning st.info. added comment in st.c for DECSCNM.

st.info

@@ -5,10 +5,10 @@ st| simpleterm,
 	am,
 #	bce,
 	bel=^G,
-#	blink=\E[5m
+#	blink=\E[5m,
 	bold=\E[1m,
 	cbt=\E[Z,
-	civis=\E[?25l
+	civis=\E[?25l,
 	clear=\E[H\E[2J,
 	cnorm=\E[?12l\E[?25h,
 	colors#8,
@@ -28,10 +28,14 @@ st| simpleterm,
 	ed=\E[J,
 	el=\E[K,
 	home=\E[H,
+	hpa=\E[%i%p1%dG,
 	ht=^I,
 	hts=\EH,
+	ich=\E[%p1%d@,
 	il1=\E[L,
+	il=\E[%p1%dL,
 	ind=^J,
+	indn=\E[%p1%dS,
 	invis=\E[8m,
 	it#8,
 	kbs=\177,