B		Sets a relocation base

  SYNTAX
	B[ address]

  SEMANTICS
	B address sets a base for subsequent Examine (E) and Deposit
	(D) commands.  The system adds the current base to the value
	you supply in an Examine or Deposit command.  If address is
	not supplied, the base is set to zero.

  OPTIONS
	None

  EXAMPLES
	B		Sets base to 0
	B 6704		Sets base to 6704 octal