Update app/materials_library.py

app/materials_library.py

@@ -1392,32 +1392,32 @@ def display_materials_help():
     
     * **Library Materials**: Pre-defined materials with standard thermal properties. Use 'Preview' to view details or 'Copy' to add to your project.
     * **Project Materials**: Materials you've added to your project. Use 'Edit' to modify or 'Delete' to remove.
-    * **Material Editor/Creator**: Create new materials or edit existing project materials. Library materials can only be copied.
+    * **Material Editor/Creator**: Create new materials or edit existing project materials. Library materials can only be previewed.
     
     **Fenestrations Tab:**
     
     * **Library Fenestrations**: Pre-defined windows, doors, and skylights. Use 'Preview' to view details or 'Copy' to add to your project.
     * **Project Fenestrations**: Fenestrations you've added to your project. Use 'Edit' to modify or 'Delete' to remove.
-    * **Fenestration Editor/Creator**: Create new fenestrations or edit existing project fenestrations. Library fenestrations can only be copied.
+    * **Fenestration Editor/Creator**: Create new fenestrations or edit existing project fenestrations. Library fenestrations can only be previewed.
     
     **Key Properties:**
     
     * **Thermal Conductivity (W/m·K)**: Rate of heat transfer through a material. Lower values indicate better insulation.
     * **Density (kg/m³)**: Mass per unit volume.
-    * **Specific Heat (J/kg·K)**: Energy required to raise the temperature of 1 kg by 1 K.
+    * **Specific Heat (J/kg·K)**: Energy required to raise the temperature of 1 kg by 1 K. Higher values indicate better thermal mass.
     * **Thermal Mass**: Areal heat capacity, categorized as Low (<30,000 J/m²·K), Medium (30,000–90,000 J/m²·K), or High (>90,000 J/m²·K).
     * **U-Value (W/m²·K)**: Overall heat transfer coefficient, accounting for material and surface resistances. Lower values indicate better insulation.
-    * **SHGC**: Solar absorption coefficient (0-1). Fraction of incident solar radiation that enters through a fenestration.
+    * **SHGC**: Solar Heat Gain Coefficient (0-1). Fraction of incident solar radiation that enters through a fenestration.
     * **Visible Transmittance**: Fraction of visible light that passes through a fenestration.
     * **Embodied Carbon**: Carbon emissions associated with material production, measured in kg CO₂e per unit volume or area.
-    * **Cost**: Material’s cost in USD per unit volume or area.
+    * **Cost**: Material cost in USD per unit volume or area.
     * **Absorptivity**: Fraction of solar radiation absorbed (0-1). Depends on colour category.
     * **Emissivity**: Ratio of radiation emitted by the material (0-1).
     * **Colour**: Category affecting absorptivity (Light, Medium, Dark, Reflective).
     
-    **Workflow**:
+    **Workflow:**
     
-    1. Browse library materials and fenestrations
+    1. Browse the library materials and fenestrations
     2. Copy items to your project or create custom ones
     3. Edit properties as needed for your specific project
     4. Continue to the Construction page to create assemblies using these materials