LPA Prolog MacProlog32 Features

• support for Definite Clause Grammars (DCGs) and user-defined term expansion
• fast solution set routines (findall/3, bagof/3, setof/3)
• fast multi-key sorting and sublist indexing primitives
• 32-bit integer and 80-bit double-precision floating point arithmetic
• character, string, constant and term conversion routines

• fast extended double-indexed property management system for data values
• re-definable handlers for errors, debugger, interrupts, browser and loader
• efficient text manipulation through dedicated string data type
• advanced facilities for predicate meta-variables and condition meta-variables

• HFS primitives for accessing files, folders, paths and disc traversal
• random access file, window and serial I/O primitives
• comprehensive set of formatted I/O primitives for accessing structured data

• declarative graphics environment with versatile graphics primitives
• high-level window, menu and dialog management primitives
• program access to text edit routines (cut/1, copy/1, paste/1)
• structured file browser mechanism for building interactive help systems
• easy-to-program pop-up, pull-down and hierarchical menu system

• time and date primitives, with access to system clock
• support for C and Pascal external functions through code resources
• direct access to resources on disc (pictures, icons, cursors, code, sound, etc..)
• program access to events in 'foreign' windows
• programmatic control over printing and page set-up
• integration with standard applications through Apple Events interface

• access to window details (font, colour, mode etc) through convenient dialogs
• comprehensive file loading and saving facilities
• fully integrated Macintosh text editor (with Undo & Clipboard support)
• various text-based menu options, including 'Find ...', 'Replace', 'Replace all', etc..
• support for organizing program, text and graphic windows on DeskTop
• 'Find definition...' facility to instantly locate source code programs

• ability to enter and execute any goal directly into a window
• ability to set spy points through convenient dialogs
• interactive configurable box-model source-level debugger
• on-line information on both user-programs and system primitives
• full and partial program cross-referencing

• Flex is a portable frame-based expert system toolkit.
• Prolog++ toolkit is for object oriented programming.