A few things. You need to use the RMI / RJ console (indicated in the startup type of your configuration launch), code completion does not work on the RTerm console.
On the "R Console" tab (still in startup configuration) you need to "enable Object DB"
When this is done, run R and download the packages you need. You should see a completed view of the "Browse browser object."
At this moment I am betting on code completion!
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