HISTmngr is a display tool which allows viewing of the histogram, contours, and gates which have been defined for the species of interest. Any of the defined histograms or contours may be viewed and the event gate settings may be changed from this program.

When rare isotope data are collected and uploaded into the computer the individual event data blocks are processed according to rule sets contained in a configuration file.

The format of the rare isotope event file and sets of one and two dimensional histogramming arrays (contours) are specified here. An event gate may be defined for each spectrum.

As each event data block is processed a line of data is written to the event file and the histogramming arrays are updated. One channel of input data may participate in several histograms and contours at the same time.