• → $RecursionLimit

$IterationLimit

WMA link

$IterationLimit

specifies the maximum number of times a reevaluation of an expression may happen.

Calculations terminated by $IterationLimit return $Aborted:

• • $IterationLimit

The iteration limit protects against runaway definitions:

• • Block[{$IterationLimit = 20}, yin := yang; yang := yin; yin]