Klever

When EMG outputs information about callbacks it associates it with corresponding verification objects each time one particular verification object is specified. Ditto for its input, but there it supports for multiple verification objects and selects the appropriate ones. This is indeed incomplete and dangerous because of callbacks should be associated with all EMG attributes that now include verification objects and rule specifications. These attributes are known without EMG itself, so it shouldn't know and rely of them. When switching off callbacks one should do that not for verification objects, but for sub-jobs where each sub-job should correspond to the only verification object and for one or more rule specifications.