Update user.md

Author: m-messer

docs/user.md

@@ -1,3 +1,24 @@
-# YourFunctionName
+# compareSets
+### Overview
+Checks if a student's set expression matches the correct answer. Can compare both the meaning and exact form of set expressions.
+When to Use
+For questions involving set operations like union (∪), intersection (∩), and complement.
 
-Teacher-facing documentation for this function.
+### Examples:
+
+"Express the union of sets A and B"
+"Simplify: (A ∪ B) ∩ C"
+
+Parameters
+`is_latex` (optional)
+
+Default: `false`
+Description: Set to true if students enter answers in LaTeX format (\cup, \cap). Set to false for plain text.
+
+`enforce_expression_equality` (optional)
+
+Default: `false`
+Description:
+
+`false`: Accepts any mathematically equivalent form (e.g., "A ∪ B" = "B ∪ A")
+`true`: Requires exact form match