There are three methods to refer to Movie Clips:

Syntax	Path Name	Description
From the root of the same movie
/	root	Refers to the root directory (main timeline).
/Fred	a child of the root	Refers to the Movie Clip 'Fred' found on the Main timeline.
/Fred/Pebbles	a grandchild of the root	Refers to the movie clip 'Pebbles' that is a child of the Movie Clip 'Fred' that is on the Main timeline
Relative
..	parent	Refers to the Movie Clip (or the main timeline) that is one level back towards the root.   Note .. and ../ are the same.
../../	grandparent	Refers to the Movie Clip (or the main timeline) that is two levels back towards the root.
Fred	a child	Refers to a Movie Clip 'Fred' that is on the same timeline as the Tell Target command.
Fred/Pebbles	a grandchild	Refers to the movie clip 'Pebbles' that is a child of the Movie Clip 'Fred'.   Fred is on the same timeline as the Tell Target command.
../Fred	a sibling	Refers to a Movie Clip that has the same parent (Movie Clip or main timeline).
From the root of a specified Movie by Level number.
_levelx	Movie root	Refers to root of movie by the level number 'x' as loaded by Load Movie. The movie is referred to by its level number which can be any number from 0-16000. The original movie is always loaded into Level 0 (zero).
_level33/Fred	Child of movie root	Refers to child of root movie that was loaded into level 33 by Load Movie
_level5/Fred/Pebbles	Grandchild of movie root	Refers to grandchild of root movie that was loaded into level 5 by Load Movie