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# Reference

The Reference element refers to another CTF file by path or by alias. The external file is imported into the corresponding location of the ProcessList.

It is an Autodesk extension to the Academy/ASC XML color transform format.

## Contains

- Description. Optional, any number.

## Contained By

- ProcessList

## Attributes

It is necessary to specify either a path or an alias attribute, but not both.

id, name, inBitDepth, outBitDepth
  See Common Operator Attributes.

  Note that the values specified here override the values in the external file.

alias
  A short name for the path and file name of another CTF file. The alias must be defined in a Ref element in the SynColor configuration file. By default, the graphicsMonitor alias is set to the appropriate transform for display on the workstation monitor. You can create additional aliases as desired.
path
  The path and file name of another CTF file. The path is relative to basePath if that attribute is defined; otherwise, the path is absolute.
basePath
  The base location for a relative path.

  Value | Meaning
  --- | ---
  Autodesk | The installation location of the color transforms supplied with Autodesk applications. The exact path is resolved based on the version of Autodesk Color Management used by the running application.
  Shared | The shared location for custom color transforms for any application that uses Autodesk Color Management. The location is set in the SharedHome of the SynColor configuration file.

## Example

    <ProcessList id="561c5aba-8709-477c-8211-7ec4a6fe8820">
        <Reference basePath="Autodesk" inBitDepth="32f" outBitDepth="32f" path="RRT+ODT/ACES_to_CIE-XYZ_v0.1.1.ctf" />
        <Reference alias="graphicsMonitor" inBitDepth="32f" outBitDepth="8i" />
        <Reference inBitDepth="8i" outBitDepth="8i" path="lut1d_example.xml" basePath="Shared" />
        <Reference inBitDepth="8i" outBitDepth="8i" path="/zeus/toto/toto.xml" />
    </ProcessList>