correction of a small bug

[LAUJJL]

Hi

As there is a new release to come, it would be eventually useful to correct a small bug.
When one tries to define a subscript as equivalent to another one, one can only choose the normal type and equivalent does not show anymore as it was in the preceding releases.
There is instead a blank line, and :is: is proposed as if the subscript was a text variable.
Regards.
JJ

[bob@vensim.com]

Thanks for pointing that out. 5.7a should be up by tomorrow.