
1) Visual programming language
Found on
https://www.crosswordclues.com/clue/thinglab

ThingLab is a visual programming environment implemented in Smalltalk and designed at Xerox PARC by Alan Borning. A conventional system allows a user to provide inputs that produce outputs. A constraint-oriented system, such as ThingLab, allows the user to provide arbitrary inputs or outputs, then solves for whatever is unknown. ThingLab is viewed...
Found on
http://en.wikipedia.org/wiki/ThingLab
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