"Justify center" icon from Tango Project Since version 0.8.90 Tango Project icons are Public Domain: Tango Project FAQ tango icon justify Tango Format Justify Center
"Justify fill" icon from Tango Project Since version 0.8.90 Tango Project icons are Public Domain: Tango Project FAQ tango icon justify Tango Format Justify Fill
"Justify left" icon from Tango Project Since version 0.8.90 Tango Project icons are Public Domain: Tango Project FAQ tango icon justify Tango Format Justify Left