why generlised linked list?

Generalized linked lists are used because although the efficiency of polynomial operations using linked list is good but still, the disadvantage is that the linked list is unable to use multiple variable polynomial equation efficiently. 
It helps us to represent multi-variable polynomial along with the list of elements.
generlised linked list contain structure or element with everyone containing   it's own pointer .
it's generlised if list can have deletion ,insertion and similar insertion effectively into it.


 typical sturucture of generlised lnk list in is as follow

typedef struct node
{
 char c;
 int index ;
 struct node *next ,*down;
}GLL;

 above is the basic structure of generlised linked list ,so by which we can create whole GLL.