Dear all, If anybody is interested, I found a way to make konqueror show each URL opened by browseURL() in a new tab of the same window of the current desktop, e.g. help pages opened while htmlhelp=TRUE. In order to achieve this, simply set options(browser="kfmclient newTab") in your ~/.Rprofile or wherever you set your R options. Best regards, Johannes Ranke -- Dr. Johannes Ranke jranke at uni-bremen.de UFT Bremen, Leobenerstr. 1 +49 421 218 8971 D-28359 Bremen http://www.uft.uni-bremen.de/chemie/ranke