[16 Dec 92]

CA-Clipper 5.2 -- Why upgrade from CA-Clipper 5.01:

New Documentation --

     All documentation will be reprinted.  Functions previously 
     included only in the Norton Guides online documentation will be 
     included in the printed manuals.  New tutorials for novice 
     programmers and basic network programming, and additional code 
     samples, will be included.

API (Application Programming Interface) --

     Several APIs will be documented:

     VMM (Virtual Memory Manager) API:  Enables software developers 
     to better utilize CA-Clipper's advanced features.  Programs 
     written in C, Pascal and Assembly can use the VMM system to 
     manage memory in a way consistent with CA-Clipper.

     RDD (Replaceable Database Drivers) API:  Developers will be able 
     to create their own RDDs and thus have access to virtually any 
     file format.

     GT (General Terminal) API:  Developers can create alternate 
     screen drivers for CA-Clipper.  This enables, for instance, 
     access to the graphic screen.

Additional RDDs --

     CA-Clipper 5.2 will contain several RDDs:

     The DBFNDX driver enables programmers to read and write dBASE 
     III PLUS index files.

     The DBFNTXC driver was enhanced to allow conditional index 
     creation and manipulation.  It also has a new faster locking 
     mechanism which will improve performance in most network 
     environments and a hook for the inclusion of a progress gauge 
     during indexing.

     The DBFCDX driver enables programmers to create and manipulate 
     FoxPro index files.

     The DBFPDX driver enables programmers to work with Paradox files.

     The DBFMDX driver enables programmers to create and maintain 
     dBASE IV-compatible multi-tag index files.

All anomaly repair patches --

     CA-Clipper 5.2 will include all fixes which have been made 
     available since the original version of CA-Clipper 5.01.  This 
     will result in a more stable application development system.

Miscellaneous --

     CA-Clipper 5.2 will also have the following features:

     RSIS (Relocatable Screen Interface Specification) compliant 
     screen I/O.  This enables faster screen writes under products 
     like QEMM which relocate the screen buffer.

     LIM 4.0-compliant expanded memory management. The 8Mb memory 
     barrier is removed under LIM 4.0 allowing access of up to 64Mb.  
     It also gives better compatibility with TSRs and faster memory 
     access.

     Enhanced debugger.

