2556 dd should accept M,G,T,... for sizes

*** 401,416 ****
  1024
  .RE
  .RS +4
  .TP
  3.
  a positive decimal number followed by \fBb\fR, specifying multiplication by
  512
  .RE
  .RS +4
  .TP
! 4.
  two or more positive decimal numbers (with or without \fBk\fR or \fBb\fR)
  separated by \fBx\fR, specifying the product of the indicated values.
  .RE
  .sp
  .LP
--- 401,452 ----
  1024
  .RE
  .RS +4
  .TP
  3.
+ a positive decimal number followed by \fBM\fR, specifying multiplication by
+ 1024*1024
+ .RE
+ .RS +4
+ .TP
+ 4.
+ a positive decimal number followed by \fBG\fR, specifying multiplication by
+ 1024*1024*1024
+ .RE
+ .RS +4
+ .TP
+ 5.
+ a positive decimal number followed by \fBT\fR, specifying multiplication by
+ 1024*1024*1024*1024
+ .RE
+ .RS +4
+ .TP
+ 6.
+ a positive decimal number followed by \fBP\fR, specifying multiplication by
+ 1024*1024*1024*1024*1024
+ .RE
+ .RS +4
+ .TP
+ 7.
+ a positive decimal number followed by \fBE\fR, specifying multiplication by
+ 1024*1024*1024*1024*1024*1024
+ .RE
+ .RS +4
+ .TP
+ 8.
+ a positive decimal number followed by \fBZ\fR, specifying multiplication by
+ 1024*1024*1024*1024*1024*1024*1024
+ .RE
+ .RS +4
+ .TP
+ 9.
  a positive decimal number followed by \fBb\fR, specifying multiplication by
  512
  .RE
  .RS +4
  .TP
! 10.
  two or more positive decimal numbers (with or without \fBk\fR or \fBb\fR)
  separated by \fBx\fR, specifying the product of the indicated values.
  .RE
  .sp
  .LP