diff --git a/testdata/algo/l2n_writer_au_p.txt b/testdata/algo/l2n_writer_au_p.txt
new file mode 100644
index 000000000..8a847e9ec
--- /dev/null
+++ b/testdata/algo/l2n_writer_au_p.txt
@@ -0,0 +1,529 @@
+#%l2n-klayout
+W(RINGO)
+U(0.001)
+L(poly '3/0')
+L(poly_lbl '3/1')
+L(diff_cont '4/0')
+L(poly_cont '5/0')
+L(metal1 '6/0')
+L(metal1_lbl '6/1')
+L(via1 '7/0')
+L(metal2 '8/0')
+L(metal2_lbl '8/1')
+L(psd)
+L(nsd)
+C(poly poly poly_lbl poly_cont)
+C(poly_lbl poly)
+C(diff_cont diff_cont metal1 psd nsd)
+C(poly_cont poly poly_cont metal1)
+C(metal1 diff_cont poly_cont metal1 metal1_lbl via1)
+C(metal1_lbl metal1)
+C(via1 metal1 via1 metal2)
+C(metal2 via1 metal2 metal2_lbl)
+C(metal2_lbl metal2)
+C(psd diff_cont psd)
+C(nsd diff_cont nsd)
+D(D$PMOS PMOS
+ T(S
+  R(psd (-650 -475) (525 950))
+ )
+ T(G
+  R(poly (-125 -475) (250 950))
+ )
+ T(D
+  R(psd (125 -475) (550 950))
+ )
+)
+D(D$PMOS$1 PMOS
+ T(S
+  R(psd (-675 -475) (550 950))
+ )
+ T(G
+  R(poly (-125 -475) (250 950))
+ )
+ T(D
+  R(psd (125 -475) (525 950))
+ )
+)
+D(D$NMOS NMOS
+ T(S
+  R(nsd (-650 -475) (525 950))
+ )
+ T(G
+  R(poly (-125 -475) (250 950))
+ )
+ T(D
+  R(nsd (125 -475) (550 950))
+ )
+)
+D(D$NMOS$1 NMOS
+ T(S
+  R(nsd (-675 -475) (550 950))
+ )
+ T(G
+  R(poly (-125 -475) (250 950))
+ )
+ T(D
+  R(nsd (125 -475) (525 950))
+ )
+)
+X(INV2
+ R((-1700 -800) (3100 4600))
+ N(1 I(IN)
+  R(poly (-525 -250) (250 2500))
+  R(poly (-1425 -630) (1300 360))
+  R(poly (-125 -2780) (250 1600))
+  R(poly (-250 1200) (250 1600))
+  R(poly_lbl (-526 -1801) (2 2))
+  R(poly_cont (-831 -111) (220 220))
+ )
+ N(2
+  R(poly (275 -250) (250 2500))
+  R(poly (-305 -1430) (360 360))
+  R(poly (-305 820) (250 1600))
+  R(poly (-250 -4400) (250 1600))
+  R(diff_cont (-1435 1690) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(poly_cont (980 580) (220 220))
+  R(metal1 (-1310 -290) (1380 360))
+  R(metal1 (-1560 -1600) (360 2840))
+  R(metal1 (-360 0) (360 760))
+  R(metal1 (-360 -3560) (360 760))
+  R(psd (-430 1945) (525 950))
+  R(nsd (-525 -3750) (525 950))
+ )
+ N(3 I(OUT)
+  R(diff_cont (690 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  Q(metal1 (-110 110) (0 360) (140 0) (0 1240) (-320 0) (0 800) (360 0) (0 -440) (320 0) (0 -1960))
+  R(metal1 (-680 2400) (360 760))
+  R(metal1 (-360 -3560) (360 760))
+  R(metal1_lbl (-181 1419) (2 2))
+  R(psd (-276 524) (525 950))
+  R(nsd (-525 -3750) (525 950))
+ )
+ N(4
+  R(diff_cont (-110 -310) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(metal1 (-290 -290) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(via1 (-305 -705) (250 250))
+  R(via1 (-250 150) (250 250))
+  R(metal2 (-1525 -775) (2800 900))
+  R(nsd (-1675 -925) (550 950))
+ )
+ N(5
+  R(diff_cont (-110 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(metal1 (-290 -290) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(via1 (-305 -705) (250 250))
+  R(via1 (-250 150) (250 250))
+  R(metal2 (-1525 -775) (2800 900))
+  R(psd (-1675 -925) (550 950))
+ )
+ P(1 I(IN))
+ P(2)
+ P(3 I(OUT))
+ P(4)
+ P(5)
+ D(1 D$PMOS
+  Y(-400 2800)
+  F(#17 #242)
+  F('a_"non_quoted"_string' '2s')
+  F('a_float' ##20.5)
+  E(L 0.25)
+  E(W 0.95)
+  E(AS 0.49875)
+  E(AD 0.26125)
+  E(PS 2.95)
+  E(PD 1.5)
+  T(S 2)
+  T(G 1)
+  T(D 5)
+ )
+ D(2 D$PMOS$1
+  Y(400 2800)
+  E(L 0.25)
+  E(W 0.95)
+  E(AS 0.26125)
+  E(AD 0.49875)
+  E(PS 1.5)
+  E(PD 2.95)
+  T(S 5)
+  T(G 2)
+  T(D 3)
+ )
+ D(3 D$NMOS
+  Y(-400 0)
+  E(L 0.25)
+  E(W 0.95)
+  E(AS 0.49875)
+  E(AD 0.26125)
+  E(PS 2.95)
+  E(PD 1.5)
+  T(S 2)
+  T(G 1)
+  T(D 4)
+ )
+ D(4 D$NMOS$1
+  Y(400 0)
+  E(L 0.25)
+  E(W 0.95)
+  E(AS 0.26125)
+  E(AD 0.49875)
+  E(PS 1.5)
+  E(PD 2.95)
+  T(S 4)
+  T(G 2)
+  T(D 3)
+ )
+)
+X(RINGO
+ R((-1720 -800) (26880 4600))
+ F(#17 #42)
+ F('a_"non_quoted"_string' 's')
+ F('a_float' ##0.5)
+ N(1 I(FB)
+  F(#17 #142)
+  F('a_"non_quoted"_string' '1s')
+  F('a_float' ##10.5)
+  R(diff_cont (22850 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(metal1 (-24770 1310) (360 360))
+  R(via1 (-305 -305) (250 250))
+  R(via1 (24230 -250) (250 250))
+  R(metal2 (-24805 -325) (24880 400))
+  R(metal2_lbl (-23161 -201) (2 2))
+ )
+ N(2 I(OSC)
+  R(diff_cont (24450 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(via1 (-235 1765) (250 250))
+  R(metal2 (-325 -325) (400 400))
+  R(metal2_lbl (-201 -201) (2 2))
+ )
+ N(3 I(VSS)
+  R(diff_cont (2530 -310) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-2860 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (5060 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(metal1 (-21410 -290) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (-3000 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (4920 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal2_lbl (-23941 -381) (2 2))
+ )
+ N(4 I(VDD)
+  R(diff_cont (2530 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-2860 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (5060 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (2420 -220) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -220) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(metal1 (-21410 -290) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (-3000 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (4920 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal1 (2280 -760) (360 760))
+  R(metal1 (-360 -760) (360 760))
+  R(metal2_lbl (-23941 -381) (2 2))
+ )
+ N(5
+  R(diff_cont (20210 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(6
+  R(diff_cont (17570 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(7
+  R(diff_cont (14930 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(8
+  R(diff_cont (12290 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(9
+  R(diff_cont (9650 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(10
+  R(diff_cont (7010 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(11
+  R(diff_cont (4370 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(12
+  R(diff_cont (1730 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(13
+  R(diff_cont (-910 2490) (220 220))
+  R(diff_cont (-220 180) (220 220))
+  R(diff_cont (-220 -3420) (220 220))
+  R(diff_cont (-220 180) (220 220))
+ )
+ N(14
+  R(diff_cont (690 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(15
+  R(diff_cont (21810 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(16
+  R(diff_cont (19170 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(17
+  R(diff_cont (16530 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(18
+  R(diff_cont (13890 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(19
+  R(diff_cont (11250 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(20
+  R(diff_cont (8610 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(21
+  R(diff_cont (5970 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ N(22
+  R(diff_cont (3330 2890) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+  R(diff_cont (-220 -2620) (220 220))
+  R(diff_cont (-220 -620) (220 220))
+ )
+ P(1 I(FB))
+ P(2 I(OSC))
+ P(3 I(VSS))
+ P(4 I(VDD))
+ X(1 INV2 Y(23760 0)
+  F(#17 #342)
+  F('a_"non_quoted"_string' '3s')
+  F('a_float' ##30.5)
+  P(0 15)
+  P(1 1)
+  P(2 2)
+  P(3 3)
+  P(4 4)
+ )
+ X(2 INV2 Y(0 0)
+  P(0 1)
+  P(1 13)
+  P(2 14)
+  P(3 3)
+  P(4 4)
+ )
+ X(3 INV2 Y(2640 0)
+  P(0 14)
+  P(1 12)
+  P(2 22)
+  P(3 3)
+  P(4 4)
+ )
+ X(4 INV2 Y(5280 0)
+  P(0 22)
+  P(1 11)
+  P(2 21)
+  P(3 3)
+  P(4 4)
+ )
+ X(5 INV2 Y(7920 0)
+  P(0 21)
+  P(1 10)
+  P(2 20)
+  P(3 3)
+  P(4 4)
+ )
+ X(6 INV2 Y(10560 0)
+  P(0 20)
+  P(1 9)
+  P(2 19)
+  P(3 3)
+  P(4 4)
+ )
+ X(7 INV2 Y(13200 0)
+  P(0 19)
+  P(1 8)
+  P(2 18)
+  P(3 3)
+  P(4 4)
+ )
+ X(8 INV2 Y(15840 0)
+  P(0 18)
+  P(1 7)
+  P(2 17)
+  P(3 3)
+  P(4 4)
+ )
+ X(9 INV2 Y(18480 0)
+  P(0 17)
+  P(1 6)
+  P(2 16)
+  P(3 3)
+  P(4 4)
+ )
+ X(10 INV2 Y(21120 0)
+  P(0 16)
+  P(1 5)
+  P(2 15)
+  P(3 3)
+  P(4 4)
+ )
+)