In Advance Design, the systems created within the Project Browser help you organize the model elements by categories. This feature provides easier handling of your model. You can also create other systems containing subsystems, thus building a tree structure of your model, providing easy management.
The system level settings influence the modeling of the vertical and horizontal linear and planar elements.

The units are defined according to the current unit for lengths. See Defining the working units.
The system level settings are defined.
When a system that has the level settings activated is defined as current:
All the vertical linear elements and vertical planar elements are created between the systems level limits.
All horizontal linear elements and horizontal planar elements are created at the superior limit of the system level.
During the modeling, the systems numbering may become discontinuous (because of renumbering systems, successive systems creation and/or deletion, changing systems position in the tree structure, etc.). Advance Design provides the option to sort the systems in the Project Browser by their ID.
To access the command, right-click a system in the Project Browser and select Sort from the context menu.

Sorting systems
Items within in a system can be sorted using the following options:
Additionally, you can sort items in either Ascending or Descending order. When using this command on a parent system, the sorting changes will apply to all its subsystems.

Example for possible outcomes of Sort command

To display all the elements of the structure and loads (whether a system is isolated or a few systems are hidden), in the Project Browser, select Display all from the context menu of the Model, Structure or any system of elements.
Tip: Notice the system color code:
Blue: indicates the current system, where the new elements are created.
Red: helps the user to identify the system that contains an element which is selected in the graphic area (if there is a selection).

System color code
To select all the elements of a system:
To select all the elements of several systems:
Tip: When selecting all the elements of one or more systems, the way described above, the command line displays the number of selected elements and their type:

Information in the Command line