@node Creating Hash
@section Creating Hash Tables
+@cindex creating hash tables
The principal function for creating a hash table is
@code{make-hash-table}.
@node Defining Hash
@section Defining Hash Comparisons
@cindex hash code
+@cindex define hash comparisons
You can define new methods of key lookup by means of
@code{define-hash-table-test}. In order to use this feature, you need