R-group Attachment Error

• Checker searches for missing attachment points among R-group elements.

• Fixer offers adding R-group attachment points only in unambiguous cases (fixrgroupattachment).

  Example :

  R-group Attachment Error Checker (rgroupattachmenterror)	Warning:	Fix
  		Add attachment point (fixrgroupattachment)
  Find missing attachment points	ex_rgattach_ch	ex_rgattach_f
  Find missing attachment points