diff --git a/src/ifcopenshell-python/ifcopenshell/util/doc.py b/src/ifcopenshell-python/ifcopenshell/util/doc.py
index be780c0bd8..cd13f26f04 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/doc.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/doc.py
@@ -283,8 +283,19 @@ class DocExtractor:
                 items = [li.get_text() for li in child.find_all("li", recursive=False)]
                 parts.append(" ".join(f"- {item}" for item in items))
             else:
-                parts.append(child.get_text())
+                part = child.get_text()
+                # Some IFC2X3 docs put the HISTORY remark in a plain leading
+                # paragraph rather than a blockquote; it is metadata, not part
+                # of the definition.
+                if re.match(r"\s*(HISTORY|IFC2x Edition)\b", part):
+                    continue
+                parts.append(part)
         text = " ".join(parts)
+        # A remark can also be a "lazy" blockquote continuation inside a
+        # paragraph (a literal "> HISTORY ..." tail that markdown does not
+        # turn into a <blockquote>) or an inline "HISTORY: ..." sentence; cut
+        # the definition there.
+        text = re.split(r"\s*(?:>\s*)?(?:HISTORY\s*:|>\s*HISTORY\b|(?:>\s*)?IFC2x Edition\b)", text)[0]
         # strip inline kramdown/pandoc attribute-list markers that survive as literal
         # text once we're no longer limited to the first paragraph, e.g.
         # "{ .change-ifc2x4}", "{ .note}", "{: .extDef}".
diff --git a/src/ifcopenshell-python/ifcopenshell/util/schema/ifc2x3_types.json b/src/ifcopenshell-python/ifcopenshell/util/schema/ifc2x3_types.json
index 3c8403c259..9818f3a41a 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/schema/ifc2x3_types.json
+++ b/src/ifcopenshell-python/ifcopenshell/util/schema/ifc2x3_types.json
@@ -416,7 +416,7 @@
         "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ifcproductextension/lexical/ifcelementcompositionenum.htm"
     },
     "IfcEnergyMeasure": {
-        "description": "A measure of energy required or used. Usually measured in Joules, (J, Nm). Type: REAL > HISTORY New type in IFC Release 2.0.",
+        "description": "A measure of energy required or used. Usually measured in Joules, (J, Nm). Type: REAL",
         "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ifcmeasureresource/lexical/ifcenergymeasure.htm"
     },
     "IfcEnergySequenceEnum": {
@@ -520,7 +520,7 @@
         "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ifchvacdomain/lexical/ifcheatexchangertypeenum.htm"
     },
     "IfcHeatFluxDensityMeasure": {
-        "description": "A measure of the density of heat flux within a body. Usually measured in W/m2 (J/s m2). Type: REAL > HISTORY New type in IFC Release 2.0.",
+        "description": "A measure of the density of heat flux within a body. Usually measured in W/m2 (J/s m2). Type: REAL",
         "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ifcmeasureresource/lexical/ifcheatfluxdensitymeasure.htm"
     },
     "IfcHeatingValueMeasure": {
@@ -696,7 +696,7 @@
         "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ifcsharedbldgelements/lexical/ifcmembertypeenum.htm"
     },
     "IfcMetricValueSelect": {
-        "description": "An IfcMetricValueSelect is a select type that enables selection of the data type for the value component of an IfcMetric. HISTORY: New type in IFC Release 2.0 Select - IfcCostValue - IfcDateTimeSelect - IfcMetricBoundedValue - IfcMeasureWithUnit - IfcTable - IfcText - IfcTimeSeries",
+        "description": "An IfcMetricValueSelect is a select type that enables selection of the data type for the value component of an IfcMetric.",
         "spec_url": "https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ifcconstraintresource/lexical/ifcmetricvalueselect.htm"
     },
     "IfcMinuteInHour": {