PASCAL: Pointers, summary

SUMMARY OF POINTERS

A pointer can point to a location of any data type, including records. Its basic syntax is,
```
	type  Pointertype = ^datatype;
	var  NameofPointerVariable : Pointertype;
```
The procedure new allocates storage space for the pointer to use
The procedure dispose deallocates the storage space associated with a pointer
A pointer can be assigned storage space using new, or assigning it the value from a pointer of the same type (eg, iptr1 := iptr2; )
A pointer can be assigned the value nil, to indicate that it is not pointing to any storage space
The value at the storage space associated with a pointer may be read or altered using the syntax
```
	NameofPointerVariable^
```
A pointer may reference a type which has not yet been created (this will be covered next)