I'm setting up the process-conf.xml file to set up a series of Upsert processes and can't find a Configuraton Parameter for Related Objects...

'sfdc.externalIdField' allows me to specify the External ID field used for data matching which in the GUI corresponds to

Step 2a: Choose your field to use for matching --> sfdc.externalIdField

Step 2b: Choose your related objects --> ???

I can't find any mention of this in any of the Data Loader documentation...

Any help is greatly appreciated!

Mike