Select, Mask opens the Mask panel, which gives more detailed
control over the selection mask than the Mask toolbar
The Mask panel provides finer control over selection masks than available on the toolbar.
Other than Database Boundaries and Groups, all mask options are in frames which are closed by default. Simply click the checkbox for that
entity type to expand the frame. Entity type options that are checked in the Mask panel can be selected, while entity type options that are not
checked cannot be selected.
Check open the frame to see options for a given entity type.
Selecting a specific Type for blocks and domains expands the masking options
further to allow even finer selection control.
Selecting a Type of domain expands the masking options further.
Note there is some interaction between the Mask panel and the Mask toolbar. If some of the entities in a basic entity type are checked and
some are not, the corresponding toolbar button is displayed with a filled square rather than a checkmark. This indicates that the particular entity type is
neither all on nor all off. For instance, if unstructured blocks are checked on and structured blocks are checked off in the Mask panel, the checkbox
next to the block symbol in the Mask toolbar is filled as shown below.
The filled checkbox next to the block symbol in the Mask toolbar shows that some types of
blocks are selectable but others are not.
Likewise, Mask toolbar actions affect the state of the checkboxes in the Mask panel. In the example above, if the checkbox next to
the block symbol is checked, all of the block types will become selectable and the corresponding checkboxes in the Mask panel will have checkmarks in
Tip: Use the Ctrl meta key while clicking on one of the
Mask toolbar icons to quickly isolate that mask.
Similar interaction also occurs between the Mask toolbar and the List. That is, if the checkbox next to the block symbol is unchecked, none of the
blocks will be selectable in the List. Note that when the Mask is checked on for database boundaries, they can only be seen and selected in the
Display window and are not available in the List panel.