DeltaWalker sessions offer you a quick way of going back to a recent file or folder comparison. Thus a comparison session holds all the information required to run that comparison the same way you ran it last time - e.g. the pathnames/URIs of the compared files and folders as well as all other session-specific properties.
Comparison sessions share many similarities with browser sessions - both are created automatically as you use the program, both refer to URIs or pathnames and a bunch of settings, and both are easily accessible.
Use the
Edit > Preferences... dialog pages to customize preference defaults and general application preferences. Use the session properties (File > Comparison Properties...) to adjust the way a file or a folder comparison to run.
Comparison properties are a subset of the global application preferences that are specific to either a file or a folder comparison. Let's look at an example:
Say you launched DeltaWalker and you opened a pair of files for comparison. You then realized that you don't care of differences in character case . One easy way to ignore those is to click on the dropdown arrow next to the Properties toolbar button and unselect "Ignore Character Case". If the files you are comparing have character case differences you would immediately see the effect of the change. What you just did was you modified the properties of the file comparison you are currently working on. The change was automatically as part of that session so next time you load it, it would be there. This is not a global-preference change however, which means that if you open a new file comparison it would have "Show Inline Differences" turned on, as this is the global default value for that preference (assuming of course you have not modified that preference already at a global-level).
If, on the other hand, you modified the "Ignore differences in character case" preference default in the All Comparison preference page that value would be used in all subsequent new file comparisons. It will not however be applied to existing file comparison sessions - those you need to modify individually.
The arrow controls
located in the upper-right of the right pane allow you to navigate through previously
viewed pages. To return to a page after viewing several pages, click the drop-down
arrow to display a list of your recently viewed preference pages.