  We introduce the syntactic formalism of the \textit{Cambridge Grammar of the
English Language} (CGEL) to the world of treebanking through the CGELBank
project. We discuss some issues in linguistic analysis that arose in adapting
the formalism to corpus annotation, followed by quantitative and qualitative
comparisons with parallel UD and PTB treebanks. We argue that CGEL provides a
good tradeoff between comprehensiveness of analysis and usability for
annotation, which motivates expanding the treebank with automatic conversion in
the future.
