企业管理 > Windchill 导出和导入 > PTC Windchill PLM Connector - Creo Packages Administrator's and User's Guide (《Windchill PLM Connector - Creo Packages 管理员和用户指南》) > Creo Packages > Supported File and Object Types > Supported File Types for Exchanging Secondary Content
  
Supported File Types for Exchanging Secondary Content
This section contains the supported file types for Windchill PDMLink.
You can specify the supported file types for secondary content in the wpc_preferences.txt file using the following format:
export.secondary.content.category=@"<file extension>":@<category>.
In this format, category can have multiple values, with each value separated by a comma. For example:
export.secondary.content.category=@"*.xls":@GENERAL,@"*.step":@EXPORT.
If you want to change the category of the secondary content in Windchill PDMLink, you must specify it in the ObjectTypeDefinitions.txt file in the following format:
@"<extension>":@<source category>=@<target category>
Following is a definition of this format:
@“extension”—Identifies the supported file extension for importing the secondary content. You must provide the extension in the format *.<ext>
@source category—The file type assigned to an object while exporting.
@target category—The file assigned to an object while importing.
For example:
@”*.pba”:@ANALYSIS_RESULTS=@GENERAL

@”*.bmp”:@IMAGE=@GENERAL
The category that you change using this format is also supported by Creo Packages.