This command assigns all of the objects within the selected symbol definitions to the specified class, and designates the objects to use any or all of the class attributes.
To change symbol attributes:
Select Tools > Utilities > Change Symbol Attrs.
The Change Symbol Attributes dialog box opens.
From the Symbol Folder list, select None, All, or a symbol folder, if any.
Select None to change the symbol attributes at the root of the symbol library (symbol definitions not in any folder). Select All to change the symbol attributes of all of the symbol definitions in the file’s symbol library. Selecting a symbol folder changes all of the symbol definitions only in that folder and any subfolders.
Select the Class to assign the symbol definition.
Select the class attributes to use, and indicate how to treat class attributes that are not used.
Either keep the object’s existing attributes, or use the current defaults if a class attribute is not specified.
Click OK.
Confirm the operation and the number of symbol definitions affected.