Schema Highlighting... Specifies the font styles and colors used to highlight differences in the schema view. Select any of the four items in the tree and modify its appearance using the font style checkboxes and the color selection button.

Font: specify the text font used for the schema tree panel. This is the same setting you can change from the Fonts page.

Use tooltips to display... When you hover the mouse cursor over a schema item, the program displays a popup hint (tooltip). It maybe either the explanation of the difference highlighting (like "This item is in the left-hand database only") or the full text of the item if it doesn't fit into the window. The latter is more informative once you get used to the color highlighting.

Show the horizontal scroller. Unless you check this, there will be no scroller at the bottom of the schema view, which saves space for another line or two of the schema tree.

Expand changed nodes. Once the Diff has scanned the two schemas, it either expands the whole schema tree or only those collection nodes that have some changes inside. For complex databases, it may be more convenient to have this option checked.

[NOTE: there used to be an option to force the Diff to use an old style 16-color glyph set for all toolbar buttons. As of AdeptSQL Diff 1.97 Build 100, this is no longer a configurable option. The Diff still have the ability to display the old-style buttons, but unless you still have a really old-fashioned 256-color video, it will start up with the true-color button set.]