\anchor filtering_elements
-When we use filters during a group creation or another operation (by
+When we use filters during group creation or another operation (by
clicking <b>Set Filter</b> button in the corresponding dialog), the
dialog for setting filters looks as shown below.
The \b Add button creates a new criterion at the end of the list of
criteria. The \b Insert button creates a new criterion before the
selected criterion. The \b Remove button deletes the selected
-criterion. The \b Clear button deletes all criteria.
+criterion. The \b Clear button deletes all criteria.\n
+If there is a choice of <b>Entity type</b> in the dialog, only
+criteria of currently selected type are used to create or change a
+filter, and criteria of hidden types (if were specified) are ignored.
\n Each <b>Entity type</b> has its specific list of criteria, however all
filters have common syntax. The <b>Threshold Value</b> should be specified
for most criteria. For numerical criteria it is necessary to indicate if
