need help understanding directory path tree structures

Ragnorack67_at_hotmail.com
Date: 03/25/05 

Date: 25 Mar 2005 08:43:13 -0800

{DIR1}
   {DIR1A}
   {DIR2B}
   {DIR3C}
{DIR2}
   {DIR2A}
   {DIR2B}
   {DIR2C} (path ../../../ to get to files in DIR1 > DIR3C)??

I've been pulling my hair (and beard) out trying to understand this.
If I want to reference a file stored in sub-directory DIR3C, inside
parent directory DIR1 in this example --- from a different parent
directory/sub-directory..... what is the correct syntax of ./../..'s
needed to get there?

Sincerely,

ALEX