What does the full flowchart look like for a code like this?

$\text{'}\{$$STAMP BS$2\}$

$\text{'}\{$$PBASIC $2\mathrm{.}5\}$

pulseCount VAR Byte

counter VAR Nib

old$1$ VAR Bit

old$2$ VAR Bit

counter $=1$

old$1=0$

old$2=1$

DO

FREQOUT $4,3000,3000$

DO UNTIL IN$13=1$

HIGH $14$

PAUSE $500$

LOW $14$

PAUSE $500$

LOOP

DO

IF $($IN IN$1)$ THEN

IF $($IN old$2)$ AND $($IN old$1)$ THEN

counter $=$ counter $+1$

IN$2=$ old$2$

IN$1=$ old$1$

IF $($counter $>4)$ THEN

counter $=1$

GOSUB Forward$\_$Pulse

ENDIF

ENDIF

ENDIF

IF $($IN$2=0)$ AND $($IN$1=0)$ THEN

GOSUB Go$\_$Straight

counter $=1$

ENDIF

IF $($IN$2=0)$ AND $($IN$1=1)$ THEN

GOSUB Turn$\_$Right

ENDIF

IF $($IN$2=1)$ AND $($IN$1=0)$ THEN

GOSUB Turn$\_$Left

ENDIF

IF $($IN$2=1)$ AND $($IN$1=1)$ THEN

GOSUB Forward$\_$Pulse

ENDIF

IF $($IN$15=0)$ THEN

GOSUB Rotate$\_360$

GOSUB Blink$\_$LED

ENDIF

LOOP

LOOP

Forward$\_$Pulse:

FOR counter $=0$ TO $1$

PULSOUT $13,760$

PULSOUT $12,740$

PAUSE $20$

NEXT

RETURN

Go$\_$Straight:

PULSOUT $13,800$

PULSOUT $12,700$

PAUSE $20$

RETURN

Turn$\_$Right:

PULSOUT $13,800$

PULSOUT $12,800$

PAUSE $20$

RETURN

Turn$\_$Left:

PULSOUT $13,700$

PULSOUT $12,700$

PAUSE $20$

RETURN

Rotate$\_360$:

DO UNTIL IN$2=1$

PULSOUT $13,700$

PULSOUT $12,700$

LOOP

DO UNTIL IN$2=0$

PULSOUT $13,700$

PULSOUT $12,700$

LOOP

DO UNTIL IN$2=1$

PULSOUT $13,700$

PULSOUT $12,700$

LOOP

DO UNTIL IN$2=0$

PULSOUT $13,700$

PULSOUT $12,700$

LOOP

RETURN

Blink$\_$LED:

FOR counter $=1$ TO $5$

PAUSE $500$

HIGH $14$

PAUSE $500$

LOW $14$

NEXT

RETURN