Advanced Programming Guide

AInternal Representationand ManipulationThe following is a list of the structures currently implemented in Maple.AND ASSIGN BINARY BREAK CAT ENAT ECOMP LEX CONT ROL DCOLON DEBUG EQUAT IONERROR EXP SEQ F LOAT F OR F OREIGNF UNCT ION GARBAGE HASH HASHT AB HF LOATIF IMP LIES INEQUAT INT NEG INT P OSLESSEQ LESST HAN LEXICAL LIST LOCALMEMBER MODDEF MODULE NAME NEXTNOT OR P ARAM P OW ER P ROCP ROD RANGE RAT IONAL READ RET URNRT ABLE SAV E SERIES SET ST AT SEQST OP ST RING SUM T ABLE T ABLEREFT RY UNEV AL USE XOR ZP P OLYEach of these structures, along with the constraints on its length andcontents, is described in the following sections.A.1 Internal OrganizationMaple appears to the user as an interactive calculator. The user interfacereads input, parses it, and then calls the math engine for each completestatement encountered. Maple can read and evaluate an unlimited numberof statements until a quit statement is evaluated, or the user interface isshut down.341