AJUDA LePMA (Learning Progressive Multiple Alignment)
--Concepts--

Fasta Format
    Fasta format is the most standard format used around the world to represent DNA sequences and it help a unified process of them.
    This format consists in introduce, in one line, the name of a sequence with symbol '>' going before it, and, in the next line, the DNA sequence as a nucletoid sequence. This step is reppeated for every sequence we want to introduce.
    For example:
        >s1
        atgact
        >s2
        cct-a

Guide Tree
    The guide tree is a hierarchical tree, similar to a phylogenetic tree, that shows graphically the successive alignments according to the similarity scores between the sequences or clusters.

Similarity Matrix
    The Similarity Matrix is a symmetric matrix that shows us all the similarities (or distances) between every pair of sequences or clusters in each moment during the multiple alignment process.
    At first step, we get the scores of this matrix comparing all the sequences in pairs but, from the second step, we apply an aproximation formula to calculate the similarities regarding to the new clusters aligned.

Pair-Wise Scoring Matrix
    The Pair-wise Scoring Matrix shows us a comparison between two sequences character by character as we can see the similarity score between them.
    In this program, we can get this matrix just clicking any value from the first step Similarity Matrix.