This article is from the FAQ, by with numerous contributions by others.
Let's assume that we have:
t1, t2: @text;
Then:
t1[]->t2.equal
returns true if and only if t1 and t2 are equal, and
t1[]->t2.equalNCS
returns true if and only if t1 and t2 are equal up to differences in case.
 
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