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<Bold>Function Syntax: Command</Bold>
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<Bold>Version: 1.0 Date: </Bold>
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<Bold>Description</Bold><LineBreak/>
🚀 Copy, rename, and relayer a selected AutoCAD block reference by creating a new independent block definition, preserving dynamic block behavior, and optionally updating all entities inside the copied block to ByLayer display properties.<LineBreak/>
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<Bold>Function Syntax</Bold><LineBreak/>
• <Bold><Run Foreground="DarkRed">CopyBlockChangeLayer</Run></Bold><LineBreak/>
• <Bold><Run Foreground="DarkRed">RB</Run></Bold><LineBreak/>
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<Bold>SEO Friendly Description</Bold><LineBreak/>
🧩 CopyRenameBlockChangeLayer is an AutoCAD AutoLISP block utility based on the copy and rename block-reference workflow, extended with a DCL dialog for selecting a new block name and target layer.<LineBreak/>
🔄 The command can create a renamed copy of a selected block reference or rename the selected reference to a duplicated block definition, avoiding a global rename of every original block reference.<LineBreak/>
🧠 ObjectDBX cloning is used to duplicate the block definition safely, rename it, then copy it back into the active drawing under the new block name.<LineBreak/>
📌 Dynamic block properties are preserved by reading the dynamic property values before the rename and restoring them after the new block definition is assigned.<LineBreak/>
🎨 After the new block is created, the selected/new block reference can be placed on the chosen layer and the internal block entities can be forced to the same layer with color, linetype, and lineweight set to ByLayer.<LineBreak/>
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<Bold>Functionalities</Bold><LineBreak/>
• 🧱 Selects one AutoCAD block reference and validates that the picked object is an INSERT.<LineBreak/>
• 🔒 Rejects blocks located on locked layers to prevent unsafe modifications.<LineBreak/>
• 📝 Suggests a unique default block name using the original effective block name plus an incremental suffix.<LineBreak/>
• 📋 Opens a DCL dialog with New Block Name, Filter Layers, and Choose Layer controls.<LineBreak/>
• 🔍 Filters available non-xref layers with wildcard logic while the user types.<LineBreak/>
• 📦 Duplicates the original block definition through ObjectDBX before assigning the new name.<LineBreak/>
• 🧬 Supports dynamic blocks by preserving dynamic property values during the block-reference rename.<LineBreak/>
• 🧭 Handles anonymous block names and xref-reload behavior where applicable.<LineBreak/>
• 🎯 Selects the copied reference after the operation when copy mode is active.<LineBreak/>
• 🎨 Applies the target layer to the block reference and internal block entities.<LineBreak/>
• 🟨 Sets internal entity color to ByLayer, linetype to ByLayer, and lineweight to ByLayer for clean layer-driven display.<LineBreak/>
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<Bold>Helper Functions and Internal Logic</Bold><LineBreak/>
• <Bold><Run Foreground="DarkRed">LM:RenameBlockReference</Run></Bold>
 — main copy/rename engine for the selected INSERT entity.
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• <Bold><Run Foreground="DarkRed">LM:GetNewBlockNameAndLayer</Run></Bold>
 — writes and opens the temporary DCL dialog used to capture the new block name and layer choice.
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• <Bold><Run Foreground="DarkRed">update-layer-list</Run></Bold>
 — filters the layer popup list using wildcard matching while the user types.
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• <Bold><Run Foreground="DarkRed">FixBlockEntitiesLayer_Internal</Run></Bold>
 — updates block-definition entities to the chosen layer and normalizes Color, Linetype, and Lineweight to ByLayer.
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<Bold>Result</Bold><LineBreak/>
<Run Foreground="DarkGreen">✅ The result is an independent renamed block copy or renamed block reference with controlled layer assignment, cleaner ByLayer graphics, and preserved dynamic-block behavior.</Run><LineBreak/>
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<Bold>Important Notes</Bold><LineBreak/>
• <Run Foreground="DarkOrange">⚠️ This tool modifies or creates block definitions in the active drawing. Use a saved drawing or backup when editing production block libraries.</Run><LineBreak/>
• <Run Foreground="DarkOrange">⚠️ The CopyBlockChangeLayer command uses copy mode, while RB uses rename mode without creating an extra copied reference.</Run><LineBreak/>
• <Run Foreground="DarkOrange">⚠️ The uploaded code header mentions historical CB/RB command names, but the implemented copy command in this file is CopyBlockChangeLayer.</Run><LineBreak/>
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<Bold>Tags</Bold><LineBreak/>
<Run Foreground="Goldenrod">🏷️ AutoCAD, 🏷️ AutoLISP, 🏷️ Civil 3D, 🏷️ Block Tools, 🏷️ Block Rename, 🏷️ Copy Block, 🏷️ Dynamic Blocks, 🏷️ ObjectDBX, 🏷️ DCL Dialog, 🏷️ Layer Management, 🏷️ ByLayer, 🏷️ CAD Productivity</Run><LineBreak/>
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