We have now specified the input parameters.

Although it is not required, it is a good idea at this point to run a "Check" to do some error checking on our input. The result of this is shown below:

Note that the calculated coordinates for the runup point are very close to our input values. Additionally, the calculated value for x_site is close to our expected location.

Note that there are also tooltips that help clarify the variables:

At this point, is also a good idea to check our data graphically using the plot features of the program.

Once the input data have been verified, select Analyze.