How to search for RNA motifs with Assemble 1.0.2?

With Assemble 1.0.2, the "Search" lateral panel allows you to find, in your MyPDB library, the single-strands making the following topologies:

Each length of the single-strands has to be defined with the character '=', '>' or '<', followed directly by an integer value.

For example, ">4 =3 <2" means a three-way junction made with a first single-strand whose length is greater than 4 residues, a second one equal to 3 residues and a third one lower than 2 residues.