Deleting settings  

You can use the Explorer to delete many of the items that appear in the Elements list. You can delete a layer, linetype, text style, coordinate system, view, block, or dimension style.     

Because you may have already created entities on a particular layer or using a particular linetype or text style, deleting one of these elements requires that you make certain choices from options the program presents. For example, if you attempt to delete a layer, the program prompts you to specify whether you want to move any entities from that layer to another layer. Every drawing has at least one layer, the default layer, named 0. You cannot delete or rename this layer. Your drawing can also contain an unlimited number of additional layers, each of which you assign a unique name.    

If you try to delete a linetype, the program prompts you to specify whether you want to convert all entities drawn using that linetype to a different linetype. If you attempt to delete a text style, the program prompts you to specify whether you want to convert all text entities created using that style to a different style.    

To delete a layer and relocate its entities to another layer

   1   Do one of the following to choose Explore Layers ():     

    On the ribbon, choose Home > Explore Layers (in Layers) or choose Tools > Layers (in Explorer).

    On the menu, choose Format > Explore Layers or choose Tools > Explorer > Explore Layers.

    On the Explorer toolbar, click the Explore Layers tool.

    Type explayers and then press Enter.

   2   From the Layer Name list, select the layer that you want to delete.

If that layer is the current layer, layer 0 automatically becomes the current layer.

   3   Choose Edit > Delete, or click the Delete tool ().

   4   From the dialog box, click the Change option and then select the layer to which you want to relocate entities.

Delete a layer and its entities.
In the command bar, type LAYDEL, then select an entity that is assigned the layer you want to delete. Using this method also deletes all entities assigned the layer.