Find files - "items are hidden"

[myrnalarson]

When I do a file search, specifying just file name, include subdirectories, I sometimes get a screen that says "x items are hidden". How do I find those files? Why are they hidden? What setting do I need to change to show these 'hidden' files automatically. I've searched Help and get no hits.

[bdeshi]

Main Menu --> View --> Show Items --> Show Hidden files and Folders