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The pair of templates {{tl|EquationRef}} and {{tl|EquationNote}} is used for labeling equations in text.

For example, {{markup2|m=<nowiki>:{{EquationRef|Eq. 1}} <math>x^2+x+1=0</math></nowiki>|r=
:{{EquationRef|Eq. 1}} <math>x^2+x+1=0</math>}}
Here, the identifier "'''Eq. 1'''" is a label which can be later referred to with a call to {{tl|EquationNote}}. That is, {{tlb|EquationNote|Eq. 1}} produces a link {{EquationNote|Eq. 1}} to this equation.

Similarly, {{markup2|m=<nowiki>:{{EquationRef|2|Eq. 2:}} <math>x^2-2x+1=0</math></nowiki>|r=
:{{EquationRef|2|Eq. 2:}} <math>x^2-2x+1=0</math>}}
which can be referred to by {{tlb|EquationNote|2}} or even {{tlb|EquationNote|2|Equation 2}} (i.e., {{EquationNote|2|Equation 2}}).

This template can be used together with {{tl|NumBlk}} to produce nicely formatted numbered equations.  For instance:

{{markup2|m=<nowiki>{{NumBlk|::|<math>x^2+x+1=0</math>|{{EquationRef|3}}}}</nowiki>|r=
{{NumBlk|::|<math>x^2+x+1=0</math>|{{EquationRef|3}}}}
}}
:which may then be referred to by {{tlb|EquationNote|3}} or even {{tlb|EquationNote|3|Eq. 3}} (i.e., {{EquationNote|3|Eq. 3}}). 

{{markup2|m=<nowiki>{{NumBlk|::|<math>x^2+x+1=0</math>|{{EquationRef|4|Eq.4}}}}</nowiki>|r=
{{NumBlk|::|<math>x^2+x+1=0</math>|{{EquationRef|4|Eq. 4}}}}
}}
:which may be referred to by {{tlb|EquationNote|4}} (i.e., {{EquationNote|4}}).

{{markup2|m=<nowiki>{{NumBlk|::|<math>x^2+x+1=0</math>|{{EquationRef|Eq.5}}}}</nowiki>|r=
{{NumBlk|::|<math>x^2+x+1=0</math>|{{EquationRef|Eq. 5}}}}
}}
:which may be referred to by {{tlb|EquationNote|Eq. 5}} (i.e., {{EquationNote|Eq. 5}}).

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