This is a diff between 1.6 and 1.7 revisions:

123a123
< $ isql 1112 -U dba -P i-123abc321
122d123
> $ isql 1111 -U dba -P i-123abc321
50a50
< $ isql 1112 -U dba -P instance-id
49d50
> $ isql 1111 -U dba -P instance-id