clarified conditional compilation;

clarified bootstrap -- avoid 'ML_file' in Pure.thy for uniformity;

clarified bootstrap -- more uniform use of ML files;

clarified bootstrap;

clarified final setup of ML environment;

clarified modules;

avoid duplicate reports;

Mostly renaming (from HOL Light to Isabelle conventions), with a couple of new results

added reference from NEWS to docs

merged

renamed ISABELLE_BUILD_JAVA_OPTIONS to ISABELLE_TOOL_JAVA_OPTIONS;

clarified SML name space: no access to structure PolyML;

prefer internal tool;

isabelle update_cartouches -c -t;

prefer internal tool;

prefer internal tool -- assuming that ISABELLE_TMP_PREFIX is created properly by Isabelle_System.isabelle_tmp_prefix;

prefer internal tool;

prefer internal tool;

prefer internal tool;

prefer internal tool;

support for internal tools;

clarified Isabelle tool wrapper: bash, Scala, no perl, no ML;

clarified usage;

tuned names

prefer infix operations;

structure PolyML is sealed after bootstrap: all ML system access is managed by Isabelle;

proper signature;

tuned signature;