diff --git a/ExportDXF/DrawingInfo.cs b/ExportDXF/DrawingInfo.cs
index c05083f..bcfddc5 100644
--- a/ExportDXF/DrawingInfo.cs
+++ b/ExportDXF/DrawingInfo.cs
@@ -1,3 +1,4 @@
+using System.IO;
 using System.Text.RegularExpressions;
 
 namespace ExportDXF
@@ -13,6 +14,35 @@ namespace ExportDXF
 
         public string Source { get; set; }
 
+        /// <summary>
+        /// The descriptive text after the equipment/drawing number (e.g. "Prox switch bracket for drive").
+        /// </summary>
+        public string Description
+        {
+            get
+            {
+                if (string.IsNullOrEmpty(Source) || string.IsNullOrEmpty(EquipmentNo))
+                    return null;
+
+                // Strip equipment number (and optional drawing number) from the source to get the description
+                var prefix = string.IsNullOrEmpty(DrawingNo)
+                    ? EquipmentNo
+                    : EquipmentNo + " " + DrawingNo;
+
+                var desc = Source;
+                if (desc.StartsWith(prefix, System.StringComparison.OrdinalIgnoreCase))
+                    desc = desc.Substring(prefix.Length);
+
+                // Remove file extension (e.g. ".SLDPRT")
+                var ext = Path.GetExtension(desc);
+                if (!string.IsNullOrEmpty(ext))
+                    desc = desc.Substring(0, desc.Length - ext.Length);
+
+                desc = desc.Trim();
+                return string.IsNullOrEmpty(desc) ? null : desc;
+            }
+        }
+
         public override string ToString()
         {
             if (string.IsNullOrEmpty(DrawingNo))
diff --git a/ExportDXF/Forms/MainForm.cs b/ExportDXF/Forms/MainForm.cs
index cf124a3..8c9c629 100644
--- a/ExportDXF/Forms/MainForm.cs
+++ b/ExportDXF/Forms/MainForm.cs
@@ -487,6 +487,9 @@ namespace ExportDXF.Forms
                     equipmentBox.Text = drawingInfo.EquipmentNo;
                 }
 
+                if (string.IsNullOrEmpty(titleBox.Text) && !string.IsNullOrEmpty(drawingInfo.Description))
+                    titleBox.Text = drawingInfo.Description;
+
                 // Load drawings for the selected equipment, then set drawing number
                 await UpdateDrawingDropdownAsync();