+# supported environment variables for grml_cleanup_chroot:
+# NOCOLORS: if set it disables colors in (debugging) output
+# LATEX_CLEANUP: remove some big directories of texlive (/usr/share/doc/texlive-*)
+# NOONLINE: disable functions that require working network setup
+# FAST: skip some longer tasks
+# REMOVE_DOCS: rm -rf /usr/share/doc + /usr/share/info