Equation -- the class of all equation expressions

Functions and methods returning an equation expression :

• "Expression == Expression" -- see Expression -- the class of all expressions

Methods that use an equation expression :

• "Equation == Equation" -- see == -- equality
• "Equation == Expression" -- see == -- equality
• "Equation == Holder" -- see == -- equality
• "Expression == Equation" -- see == -- equality
• "Holder == Equation" -- see == -- equality
• not Equation (missing documentation)

For the programmer

The object Equation is a header type, with ancestor classes AssociativeExpression < Expression < BasicList < Thing.