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Attendance at the Second European Conference on Progress in X-Ray Synchrotron Radiation Research'' in Rome, Italy, October 2--6, 1989, provided new insight to and will enhance our progress toward implementing an x-ray microprobe with undulator radiation from the Argonne Advanced Photon Source. Wider application in Europe of tunable x rays to highlight specific sites for elements in various atom arrangements gave impetus to our own program on elemental substitution for alloy modification. 6 refs.