For the manual semantic rol annotation, we use Tree Editor (TrEd). TrEd is a customizable and programmable graphical editor and viewer for tree-like structures such as linguistic trees.

In order to use TrEd with Alpino files, one additional step to the standard TrEd installation procedure is needed. This is (default) the installation procedure in short:

Since the default installation can be problematic on Mac OS, we followed these alternative steps (tested on Mac OS 10.4):

Mac OS installation

To run TrEd: Start the X11 terminal and run the tred-uu script to start TrEd with Alpino stylesheets.