Palm OS API Version Check (CheckPRC) is a useful tool for Palm developers to identify compatibility problems and maximise the number of users who can access their applications. It can be used to determine the earliest version of Palm OS that a Palm application may run on, and to identify all the Palm OS functions that the application uses.

CheckPRC runs on 32-bit Microsoft Windows systems and analyses PalmOS executable .prc files. Each API function used by the application is listed with the number of occurrences found, and identified by the PalmOS version number in which it first appeared. The functions are listed in reverse version number order so it is easy to see the lowest version of PalmOS which is required to support the application.

If the functions which depend on the higher versions of PalmOS are limited in number, the developer of the application may be able to redesign the software to eliminate them. This is likely to make the application accessible to a larger number of users.

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