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doc: clarify trust requirements on kernel #847

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3 changes: 2 additions & 1 deletion Manual/Elaboration.lean
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Expand Up @@ -99,7 +99,8 @@ Roughly speaking, Lean's processing of a source file can be divided into the fol

: Kernel Checking

Lean's trusted kernel checks the output of the elaborator to ensure that it follows the rules of the type theory.
Lean's trusted kernel{margin}[To avoid trusting the elaborator when verifying a statement, one has to {keywordOf Lean.Parser.Command.print}`#print` the statement to get the elaborated type and manually verify that it expresses the desired statement.
This brings {keywordOf Lean.Parser.Command.print}`#print` into the trusted base.] checks the output of the elaborator to ensure that it follows the rules of the type theory.

: Compilation

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