The following types of analyses can be made:

• Unreliability vs. Mission Time
• Probability of Failure Bounds
• Worst/Best-Case Bounds
• Summation of State Probabilities
• Sensitivity of Systems Failure

HARPO was designed to be more than a graphics display program for HARP. It provides a means of analyzing the huge amounts of tabular reliability data produced by HARP, thus enabling the user to make trade-offs between design alternatives within a particular system architecture or to compare different system architectural alternatives simultaneously. Although this program can be used without an in-depth knowledge of HARP's capabilities, a correct interpretation of the meaning of the graphical data does require that knowledge. Users of HARPO are encouraged to obtain the HARP documentation.