Pairwise comparisons are entered on a screen, as shown in the figure below, by clicking on or between words that express your judgment about the relative importance or preference or likelihoods (see Pairwise Comparisons Contexts) of the two elements shown on each line.
The AHP pairwise relative verbal scale consists of the following words:
The words are not precise, but because of the way Comparion computes priorities from redundant pairwise comparisons, it is possible to derive accurate ratio scale priorities from ordinal judgments.
In the example below, we are asked to compare the relative importance of each pair of objectives with respect to the decision of which car to purchase.
For each pair, you can enter a judgment by clicking on the bar that expresses your judgment about the relative importance of one objective over the other objective. You select equal or specify an intensity on either side of equal. The intensities can be moderate, strongly, very strongly, or extreme, or between any of the words, such as between moderately and strongly.
In the top line of the example above, a judgment is made that "Performance" is strongly more important than "Cost of Ownership" with respect to the decision "Purchase a new car."
You can hover your mouse over the letters or boxes below the letters to see the verbal judgments they represent by the letters.
Your judgment will be automatically recorded when you go to another step, by clicking 
You can also enter judgments about the relative preference of two alternatives with respect to an objective, using the multi-pairwise verbal comparison method.
How to Navigate in the Evaluation?
The Project Manager decides the navigation options available during the evaluation.
By default, the following navigation box and buttons are available at the bottom of the evaluation page.
Sequential Navigation:
The easiest and most common way to proceed through the evaluation is sequential -- by clicking the
button after entering any information requested on each page. You can go back to a previous step using the 
button.
If you have previously entered judgments and request to go back to an earlier step (see below), click 
to jump to the next screen that is unassessed.
Non-Sequential Navigation:
Depending on options set by the Project Manager, you may have considerable flexibility in navigating through the evaluation without sequentially going step by step. We recommend that you do this only if you have used Comparion before.
The "Current Step'' icon
at the bottom left of the screen can be used to display a pop-up view of the hierarchy. By clicking on any element in the hierarchy, you will jump to the first screen that elicits judgments with respect to that element. The "with respect to" for the current step is shown in blue.
If the Project Manager enables displaying the navigation box, you can click on any step to move either forward or backward.
The current step is displayed with a dark background. The step numbers are colored as follows:
- Red: judgment has not yet been made
- Black: judgment has been made
- Blue: Results or information steps
The number of steps (pages shown during the evaluation) is NOT the same as the number of evaluations because:
a) some pages show information or results; and
b) some pages may have multiple evaluations.
If you want to navigate directly to a step (assuming you remember what is at that step), you can click on the numbered step button, or you can click on the ellipses and be prompted for the step:
Click the "Current Step" 
This option is very useful if you want to have a quick look at all the steps of the evaluation with their short descriptions, which enables you to quickly jump to any step. We recommend that you use this option for better navigation, especially on large structured models. Note that the color-coding is the same as for navigation box steps.
