.Symbol                 Symbol Abstract Class
Alias                   Alias Class
Container               Container Class
DomainViolation         DomainViolation Class
Equation                Equation Class
Parameter               Parameter Class
Set                     Set Class
SpecialValues           SpecialValues list object
UniverseAlias           UniverseAlias Class
Variable                Variable Class
readGDX                 readGDX
writeGDX                writeGDX
