Abstract: During execution of a program, a processor may identify one or more object class instantiations that are associated by the program with a program state obtained during the execution of the program, may store in a file a description of the identified object class instantiations, where at least a portion of the execution of the program is simulatable based on the file, and may modify the first file in response to a user interaction with a graphical representation of one of the described object class instantiations, where a modified version of the portion of the execution of the program is simulatable based on the modified first file.

Abstract: A system and method for development of a computer application and of a computer application simulation is disclosed. During execution of a program, a processor may identify one or more object class instantiations that are associated by the program with a program state obtained during the execution of the program, may store in a file a description of the identified object class instantiations, where at least a portion of the execution of the program is simulatable based on the file, and may modify the first file in response to a user interaction with a graphical representation of one of the described object class instantiations, where a modified version of the portion of the execution of the program is simulatable based on the modified first file.