diff --git a/bin/check-all-md.py b/bin/check-all-md.py
index 95fe75f3d3..c06b00e339 100644
--- a/bin/check-all-md.py
+++ b/bin/check-all-md.py
@@ -1,16 +1,15 @@
 from pathlib import Path
 import os
-import re
 import sys
+from run_markdown import _parse_md
 
-PAT = re.compile(r"^```python\n(.+?)\n```", re.MULTILINE | re.DOTALL)
 TMP_FILE = "tmp.py"
 
 for filename in sys.argv[1:]:
     content = Path(filename).read_text()
-    blocks = PAT.findall(content)
-    for i, b in enumerate(blocks):
-        Path(TMP_FILE).write_text(b.strip())
+    blocks = _parse_md(content)
+    for i, block in enumerate(blocks):
+        Path(TMP_FILE).write_text(block["code"].strip())
         sys.stdout.write(f"\n{'=' * 40}\n{filename}: {i}\n")
         sys.stdout.flush()
         sys.stdout.write(f"{'-' * 40}\n")
diff --git a/bin/run_markdown.py b/bin/run_markdown.py
index 887431d361..d427c03c65 100644
--- a/bin/run_markdown.py
+++ b/bin/run_markdown.py
@@ -162,17 +162,26 @@ def _parse_md(content):
     blocks = []
     current_block = None
     in_code_block = False
+    in_region_block = False
 
     for i, line in enumerate(lines):
+        # Check for region start/end markers
+        if "<!-- #region" in line:
+            in_region_block = True
+        elif "<!-- #endregion" in line:
+            in_region_block = False
+            
         # Start of Python code block
-        if line.strip().startswith("```python"):
-            in_code_block = True
-            current_block = {
-                "start_line": i,
-                "end_line": None,
-                "code": [],
-                "type": "python",
-            }
+        elif line.strip().startswith("```python"):
+            # Only process code blocks that are NOT inside region blocks
+            if not in_region_block:
+                in_code_block = True
+                current_block = {
+                    "start_line": i,
+                    "end_line": None,
+                    "code": [],
+                    "type": "python",
+                }
 
         # End of code block
         elif line.strip() == "```" and in_code_block: