PMPRTF is a utility program designed to support the C-standard function PRINTF statements in your code.
Sample source code in C for printf (printf.c) is included in the package. This offers certain customization options. For example, you can cause a prefix to be added to the start of each line so that different applications can have unique output lines, or cause lines to be broken at a certain length. There are also some usage hints and minor restrictions, which are documented in the header of printf.c.