You can use indented items in your list to create a hierarchy of items. This hierarchy is shown in the Item column of your list. That is, all indentation is shown in the Item column. Other columns are not shown indented and the indentation level does not affect them.

You can increase or decrease the Indent Level of list items with the arrow buttons in the tool bar or the Move Right and Move Left items in the Items menu. You can also drag items left or right to change the indent level. As with moving list items up and down, you can move items right or left in an Ordered List only when no temporary sort has been applied.

Increasing the Indent Level of an item gives it a parent/child relationship with the item above it.

If an item has indented items below it, it's name will be preceded by a minus (-) if the items are showing or a plus (+) if they are not showing. You can click on the plus or minus to expand or collapse the hierarchy, showing or hiding all indented items below the clicked item. Note that the + and - signs appear only in the Item column.

All child items, those that are indented below a parent item, will automatically follow the parent item wherever it goes. When you move, delete, cut, copy or paste an item, all the child items that are indented below the item will be moved with it. This is true regardless of whether the parent item's hierarchy is expanded or collapsed, and regardless of whether all the child items are showing or not. To separate the indented child items from their parent item, move the child items out of the hierarchy rather than moving the parent.

To select an item and all items indented below it, click on the minus sign in front of the item name and hold the mouse button down. This will show you explicitly all the items that are affected when the parent item is moved.

When you sort a list, a parent item's child items will follow their parent item to its new position in the list. Within each hierarchy, child items at a given level with a common parent will be sorted as well.

When you filter a list, a parent item will be displayed if any of its child items match the filter, even if the parent itself does not match. In this case, the parent item will be displayed in gray to indicate that it does not match the filter.

If you have chosen the option Auto-check parent items in the List Properties Settings Tab, ListPro will try to keep the checkboxes consistent for parent and child items. That is, if you check all the child items of a parent item, the parent item will be checked also. Further, if you check a parent item, all its child items will be checked.