renamed raw to escape; simplified pretty token metric: type int; simplified print_mode setup: output_width and escape; moved pretty setup to pretty.ML;
renamed raw to escape;
simplified pretty token metric: type int;
simplified print_mode setup: output_width and escape;
moved pretty setup to pretty.ML;

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle