How can I change "Framework by JoomlArt.com." on footer?

The footer is displayed with the help of the module (templates\t3_blank\html\mod_
footer\). There you can also edit, delete and add stuff.
For the customization all the files of the theme are placed here: templates\t3_blank\tpls\blocks\
There you can see a lot of blocks from which the framework (skeleton) was created. The files, in which all the blocks are assembled, for example the page with the left sidebar, is here templates\t3_blank\tplsdefault-home3.php