[plt-scheme] indentation problem in DrScheme

Hi,

When I write _enum declaration as follows,
indenting by Ctrl+I in DrScheme will align
the second  CLUS_OBJECT_RESOURCE to the = symbol above.

(define CLUSTER_CONTROL_OBJECT 
  (_enum '(CLUS_OBJECT_INVALID = 0
                               CLUS_OBJECT_RESOURCE
                               CLUS_OBJECT_RESOURCE_TYPE
                               CLUS_OBJECT_GROUP
                               CLUS_OBJECT_NODE
                               CLUS_OBJECT_NETWORK
                               CLUS_OBJECT_NETINTERFACE
                               CLUS_OBJECT_CLUSTER
                               CLUS_OBJECT_USER = 128)))

This is somewhat ugly.

I want to align as follows by Ctrl+I.
Can I modify some settings to align as this ?

(define CLUSTER_CONTROL_OBJECT 
  (_enum '(CLUS_OBJECT_INVALID = 0
           CLUS_OBJECT_RESOURCE
           CLUS_OBJECT_RESOURCE_TYPE
           CLUS_OBJECT_GROUP
           CLUS_OBJECT_NODE
           CLUS_OBJECT_NETWORK
           CLUS_OBJECT_NETINTERFACE
           CLUS_OBJECT_CLUSTER
           CLUS_OBJECT_USER = 128)))


Chihiro Kuraya
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