HELP on BASIC language topics, available from the VAX BASIC
 environment is accessible from DCL in I64 BASIC. For help on
 language features, type the following command at the DCL prompt:

    $ HELP/LIBRARY=BASICHELP

    Alternately, a symbol can be defined to access help on BASIC
    language features directly. For example, the DCL command:

    $ BASHELP == "HELP /LIBR=BASICHELP"

    will allow you to type:

    $ BASHELP BASIC-topic