The "DNA Punctuation" program searches for and visualizes short palindromes and direct repeats in DNA of different organisms, from bacteria to humans. The current version of "DNA Punctuation" performs a fast search for perfect structures. Its user-friendly graphical interface helps to locate the identified sequences on the level of the whole genome or individual gene or intergenic regions.  

 - The program accepts DNA sequences in FASTA (.fna | .txt) format. Gene location files must be loaded in protein table (.ptt) format.

 - The user can set up search parameters, such as stem, loop and repeat lengths within a range of minimum and maximum values.

 - Graphical representation of palindromes and repeats at different scales within the user selected boundaries - from the whole genome to a part of a gene - allows for a quick identification of the palindrome and repeat locations.  Both elements can be drawn as icons, frequency distributions or density functions.