prefixes are now supported, as well as quoted help topics.  To

support this, completion inside quotes are now handled by R by

The memory manager now allows the strategy used to balance

garbage collection and memory growth to be controlled by setting

says.)  The use of environment variables

to control the initial (= minimum) garbage

collection trigger for number of cons cels and size of heap has

been restored: they can be overridden by the command-line options

On Windows, the device name for bitmap devices as reported

name.   This is for consistency with other platforms and was

still uses the file name: the exact form is

done at the beginning of the session if not already set.

a function that returns the breakpoints to be used (previously it

could only return the suggested number of breakpoints).

clarifications, especially as to which variants of

is intended and how to apply them to packages.

This section applies only to 64-bit platforms.

There is support for vectors longer than

elements.  This applies to raw, logical, integer, double,

complex and character vectors, as well as lists.  (Elements of

Most operations which can sensibly be done with long vectors

.  Most of these are because they explicitly work

) or because other limits (e.g., of character strings

or matrix dimensions) would be exceeded or the operations would be

replacement function with a double value.

Most aspects of indexing are available.  Generally

double-valued indices can be used to access elements beyond

There is some support for matrices and arrays with each

elements more than that.  Only some aspects of matrix algebra work

for such matrices, often taking a very long time.  In other cases

the underlying Fortran code has an unstated restriction (as was

can produce dissimilarity objects for more

to allow long vectors to be supported (now or in

the future).  Regrettably several packages had copied the non-API

inputs.  This is a precaution as it is very unlikely that existing

code will have been written to handle long vectors (and the