...hides the marked directory from the tree of available directories (in PARTdataManager). For example, this is practical in the case of parts which occur only in assemblies and which should not be selectable individually. --> The directory is marked in red in PARTproject itself.

If you mark the directory again and choose the command Show folder the status is removed.

	Note
	This change does not come into effect until you have saved and the index has been updated.