The BACK command displays the previous screen of trace data.

 Format:

 	BACK

 If you are displaying the contents of a trace file, the BACK command
 puts the screen into scroll mode, in which you can display trace data
 one screen at a time using the NEXT and BACK commands. Each subsequent
 BACK command displays the previous screen of trace data.

 During live tracing, the first use of the BACK command suspends the
 collection of trace records and puts the screen into scroll mode. Each
 Subsequent BACK command displays the previous screen of trace data. To
 scroll forward to the next screen of data, issue a NEXT command.

 To resume scrolling of trace data, issue an ANALYZE/SCROLL command.

 All saved records are scrolled through before tracing starts again.