Millisecond Forums

There is no _difference_ between the two. /subjects and /groupassignment (always) work together.

Stating

<batch>
/ subjects = (1 of 2)
...
</batch>

is the same as stating

<batch>
/ subjects = (1 of 2)
/ groupassignment = subjectnumber
...
</batch>

In other words: Condition assignment by subject number is the default behavior; it's what Inqusit does if you don't explicitly tell it to behave differently. You do the latter by specifying a different groupassignment mode:

<batch>
/ subjects = (1 of 2)
/ groupassignment = groupnumber
...
</batch>

will perform condition assignment based on the numerical group id instead of using the subject id. For details on how condition assignment works, see https://www.millisecond.com/forums/Topic13856.aspx

Hope this helps.