diff --git a/forge-steel b/forge-steel
index dcd35af..01cba36 160000
--- a/forge-steel
+++ b/forge-steel
@@ -1 +1 @@
-Subproject commit dcd35af4f169879235870cae0ddafbbbc50160b1
+Subproject commit 01cba36eaafb5b422bfabc233161ccf4661d03d5
diff --git a/project/inc_fx.glsl b/project/inc_fx.glsl
index 1b27c02..ba04496 100644
--- a/project/inc_fx.glsl
+++ b/project/inc_fx.glsl
@@ -277,7 +277,7 @@ vec4 fx_9(vec2 vUV, sampler2D previous, sampler2D feedback, int seed, vec3 b1, v
         + reframe(previous, uv2 + vec2(1., 1.) * inv_k * .125).xyz * .2
         + reframe(previous, uv2 + vec2(0., 1.) * inv_k * .125).xyz * .2
         + reframe(previous, uv2 + vec2(.5, .5) * inv_k * .125).xyz * .2;
-    c = char(mod(uv1 * k1, 1.), code) ? c : vec3(0.);
+    c = chr(mod(uv1 * k1, 1.), code) ? c : vec3(0.);
 
     return fx_master(c0, c, seed, m0);
 }
diff --git a/project/inc_src.glsl b/project/inc_src.glsl
index 2ce1a1b..236110e 100644
--- a/project/inc_src.glsl
+++ b/project/inc_src.glsl
@@ -317,7 +317,7 @@ vec4 src_7(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2
     ivec2 uv2i = ivec2(uv2);
     int code = ((charset_ctrl.y < 1. || (uv2i.x % 2 ^ uv2i.y % 2) > 0) ? 1 : 0) * (start_char + int((rand(uv2i) + char_delta) * char_span) % char_span);
     uv2 = mod(uv2, 1.);
-    float f = char(uv2, code) ? 1. : 0.;
+    float f = chr(uv2, code) ? 1. : 0.;
 
     return vec4(f);
 }
diff --git a/src/forge_invar/tools/sentences.py b/src/forge_invar/tools/sentences.py
index 6f66817..01d9d0b 100644
--- a/src/forge_invar/tools/sentences.py
+++ b/src/forge_invar/tools/sentences.py
@@ -10,6 +10,23 @@ CP437_FILE = PROJECT_PATH / "project" / "inc_cp437.glsl"
 SENTENCES_FILE = PROJECT_PATH / "sentences.txt"
 BACKUP_SENTENCES_FILE = PROJECT_PATH / "sentences.example.txt"
 
+FILE_CONTENT = """
+#ifndef INC_SENTENCES
+#define INC_SENTENCES
+
+#define SENTENCE_COUNT {0}
+#define SENTENCE_MAX_LENGTH {1}
+
+const int sentences[] = int[SENTENCE_COUNT * SENTENCE_MAX_LENGTH](
+{2}
+);
+
+const int lengths[] = int[SENTENCE_COUNT](
+{3}
+);
+#endif
+"""
+
 log = logging.getLogger(__name__)
 
 def read_mapping() -> dict[str, str]:
@@ -44,25 +61,18 @@ def main():
 
     max_len = max(len(sentence) for sentence in sentences)
 
-    with TARGET_FILE.open("w") as file:
-        file.write("#ifndef INC_SENTENCES\n")
-        file.write("#define INC_SENTENCES\n\n")
-        file.write(f"#define SENTENCE_COUNT {len(sentences)}\n")
-        file.write(f"#define SENTENCE_MAX_LENGTH {max_len}\n\n")
-        file.write(
-            "const int sentences[] = int[SENTENCE_COUNT * SENTENCE_MAX_LENGTH](\n"
-        )
-        file.writelines(
-            "    " + convert(sentence, mapping, max_len) + ("," if i < len(sentences) - 1 else " ") + f" // {sentence}\n"
-            for i, sentence in enumerate(sentences)
-        )
-        file.write(");\n\n")
-        file.write("const int lengths[] = int[SENTENCE_COUNT](\n")
-        file.write(
+    TARGET_FILE.write_text(
+        FILE_CONTENT.format(
+            len(sentences),
+            max_len,
+            "".join(
+                "    " + convert(sentence, mapping, max_len) + ("," if i < len(sentences) - 1 else " ") + f" // {sentence}\n"
+                for i, sentence in enumerate(sentences)
+            ),
             "    " + ", ".join(str(len(sentence)) for sentence in sentences) + "\n"
         )
-        file.write(");\n")
-        file.write("#endif")
+    )
+    log.info(f"Wrote {len(sentences)} sentences to {TARGET_FILE}")