http://www.fmi.uni-passau.de/archive/doc/unix/unixhelp/Unixhelp/vi_ten.html (Einblicke ins Internet, ~06/1995)Press the ESC key to enter command mode before using these commands.
pattern1 with pattern2 :s/pattern1/pattern2 on the same line
every occurrence of pattern1 :g/pattern1/s//pattern2/g with pattern2