Handle -- the class of all handles for engine objects

Handle -- the class of all handles for engine objects

The type Handle is a member of the class Type. Each object of class Handle is called a hash table.

This concept is mainly for internal use.

A handle is essentially a small integer by means of which the engine refers to the algebraic entities in it.

One advantage of a handle is that it can be registered with the Boehm garbage collector for last minute action at the time the handle is about to be destroyed.

newHandle -- make a new handle

Functions and methods returning a a hash table :

handle HashTable

newHandle Thing

toHandle ZZ

Methods for using a hash table :

expression Handle

ggPush Handle

net Handle

new EngineRing from Handle

new ZZZ from Handle

see Handle