50  REM:12FEB74
52  GOTO 9998
60  REM:PROGRAM TO CLEAR COMMON AFTER GET-$IDA
100  REM  *************************************************************
120  REM 
130  REM                       IDA
140  REM
150  REM  A SYSTEM OF PROGRAMS FOR INTERACTIVE DATA ANALYSIS FROM
160  REM  THE UNIVERSITY OF CHICAGO GRADUATE SCHOOL OF BUSINESS
170  REM        TIME-SHARED BASIC PROGRAM LIBRARY
175  REM
180  REM  DEVELOPED BY ROBERT F. LING, AIDED BY HARRY V. ROBERTS,
190  REM  AT THE GSB IN THE SUMMER AND FALL OF 1972.
200  REM  MODIFIED, AND NEW COMMANDS ADDED, BY THEM AND BY JUNE ROBERTS
210  REM  THEREAFTER.  WORK ON NEW COMMANDS BY OTHERS CREDITED IN THE"
220  REM  APPROPRIATE SUBPROGRAMS.
230  REM
240  REM  THE NAME OF THE CONTROL PROGRAM IS "IDA."
242  REM  THE IDA SYSTEM IS BASED ON A COMMAND STRUCTURE.
244  REM  GET-$IDA, RUN, AND ANSWER "YES" TO THE QUERY, "NEED HELP ?",
246  REM  TO GET DETAILED EXPLANATIONS.  ISSUE THE COMMAND 'LIST' FOR 
248  REM  A LIST OF THE IDA COMMANDS.
250  REM
260  REM
270  REM      IDA IS DESIGNED FOR USE AT THE GRADUATE SCHOOL OF BUSINESS,
280  REM  UNIVERSITY OF CHICAGO.  ITS USE ELSEWHERE IS PROHIBITED UNLESS
290  REM  SPECIFIC CONSENT HAS BEEN GIVEN BY HARRY ROBERTS OR ROBERT LING.
300  REM  HEWLETT-PACKARD HAS BEEN GIVEN PERMISSION TO DISTRIBUTE IDA
310  REM  TO USERS OF ITS COMPUTERS.
320  REM
9000  REM  *************************************************************
9998  CHAIN "$IDA",52
9999  END 
