G5-iMac:~ arthurclemens$ diff /Data/Projects_Arthur/TWiki\ Subversion/twiki/lib/TWiki/Render.pm /Users/arthurclemens/Desktop/Render.pm 
290a291,293
>     
>     # prevent linking of underscore wikiwords: =_my text_= becomes =_my <nop>text_=
>     $theText =~ s/($TWiki::regex{underscoreWikiWordPattern})/<nop>$1/g;