systems re-engineering; systems re-engineering; BASIC; BASIC; C language; C language; object-oriented languages; object-oriented languages; visual languages; visual languages; graphical user interfaces; program interpreters; program interpreters; program compilers; program compilers; software maintenance; software maintenance; Visual C++; BASIC; user interface migration; application migration; BASIC PC legacy code reengineering; graphical systems; automatic migration; BASIC character oriented user interface; GUI builder; event driven C code compilation; event driven C++ code compilation; abstract graphical objects; call-backs; translator; code translation
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