When you are at certain key stages in your design such as when you have completed the schematic design it is good practice to check your design. DEX provides you with the Checklist panel for just such a purpose.
The Checklist panel is a collection of controls that let you 'check off' you design.
To view/hide the Checklist Information panel click the Panels→Panels→ 
button.
Parts
Use this to check off and mark parts as verified in the design.
Check the 
check-box to display verified markers on your schematics. The markers are similar to marks left by a marker pen but much neater!
Terminal without verified marker
Terminal showing verified marker (grayed rectangle)
When you select an item it will be selected in the schematic
Selected Item
Click the 
button to print the list.
Click the 
button to remove all verified status for the design.
Click the 
button to display this help topic.
You can sort the list by clicking on the column header.
Right click on the column header to find more options.
Connections
Use this to check off and mark electrical connections (wires/nodes) as verified in the design.
Connection showing without verified marker
Connection showing verified marker (grayed rectangles)
Selected Item
Check the 
to flash the selected item.
Check the 
to have the item zoomed into view when selected. This combined with makes them easier to find.