close("Summary");
run("Blobs (25K)");
setAutoThreshold("Default");

waitForUser("Please start another Windows application such as Notepad or Word;\n" +
"then go back to ImageJ keeping the window open and press ok.\n" +
"Then activate and try to type some text in the other application window.\n" + 
"The keypresses will go to ImageJ instead of the other application,\n" +
"because the Summary table window is forced to front during macro execution.\n" +
"Activating Batch Mode does not help in this case.");

setBatchMode(true);
for (i=0; i<25; i++) {
   print("Analyze Particles: "+i);
   run("Analyze Particles...", "display clear summarize");
   //this creates the summary table, which is forced in front of all open windows in the OS
   wait(2000);
}