... This task is similar to eboxdetect in that it detects sources by comparing counts in a sliding square box with the expectation value due solely to background. ... The XMM dependence of eboxdetect arises because eboxdetect corrects source counts for PSF loss outside the square detection box and also calculates original source flux. boxdetect does not do this. boxdetect is designed to work in conjunction with imweightadd and thus provides the ability to search for sources in weighted-sum images. ...