March 28-April 01, 1999 . ... A comparison of the SOHO/EIT and mosaic TRACE modified images at the same wavelength (171 A) of March 30, 1999. A complicated practically identical system of various large-scale chains and threads crossing each other and joining all active regions on the disk is present on both the SOHO/EIT (a) and TRACE (b) images. ... A modified SOHO/EIT movie at 171 A showing the evolution of the complicated chain system during March 28-April 01, 1999. ...