Generate svg trees for given treebank. It works on local PML files.
Path to btred script. If not set path in $BTRED variable is used. If neither of previous is set script seeks for btred in $PATH.
Path to btred configuration. The most important settings is path to extensions.
Comma separated list with extensions. Defaultly are used the same ones as in TrEd (list in extensions.lst optained with `btred --very-quiet --list-extensions`).
Directory where sould be images stored. Default value is 'svg'.