Filtering the task outline
When you want to focus on a specific aspect of your project, you can view a subset of its tasks by creating filters for specific criteria. Possible filters include focusing on tasks that were completed in the past week, tasks that are behind the baseline target date by greater than three days, or as in the example below, tasks that are less than 50% complete.
Choose Filter Tasks from the View menu, or click the Filter button in the toolbar. A sheet appears for setting up your filtering criteria. You can add as many criteria as you like by clicking the plus icon on the right side of the entry line, and filter the criteria themselves by option-clicking on the add button to create nested criteria within the filter hierarchy. When your criteria are set up the way you want them, click the Save Filter menu to save the current filter or restore a previously saved filter. (You can also use the View ▸ Restore Saved Filter menu item.)
When your filter is set, any tasks which match your criteria remain in the outline, while the rest of the project is hidden away. You can work with the project normally while it is filtered, but you can only edit the visible tasks. While your filter is in use the Filter Bar appears, providing optiosn to edit or remove the filter and showing the number of tasks hidden.
If you export or print a project while a filter is on, only the visible tasks are included in the exported file. Note that the filters themselves will not be included when exporting from OmniPlan 2 to the older 1.x version of the OmniPlan file format.
When you're done, choose Remove Filter from the View menu or click the toolbar button again; all of your tasks reappear, no worse for the wear.