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{{ | {{if||x| p | q }} gives " p ". Notice the pair of vertical bars surrounding the empty first parameter. | ||
{{if|| | {{if|expr|2<3| p | q }} gives " p " | ||
{{if|eq| u |u| p | q }} gives " p " | |||
{{if|exist| Help:Link | p | q }} gives " p " | |||
{{if|error|{{#expr:x}}| p | q }} gives " p " |