List routines

ListAppend Append a variable into the list.
ListCount Queries the number of element(s) in a list.
ListGetType Queries the manner in which a variable of type list was created.
ListIndex Queries the index of a variable in a list.
ListIndexFromName Returns the index of a variable in a list given its name.
ListPop Pop (out) an element from a list.
ListPush Push a variable into the list.
ListSetType Specifies the manner in which a variable of type list is to be implemented.
NewList Create a list (type variable).