/SCROLLBACK, or the default alias /SB:
-/SB CLEAR - Clear screen, free all memory used by texts in window.
-/SB HOME - Jump to start of the buffer
-/SB END - Jump to end of the buffer
-/SB GOTO [[-|+]line#|time] - Jump to specified line or timestamp.
+/SB LEVELCLEAR
+ - Remove lines with level matching one of those
+ specified in the comma-separated list <level>.
+/SB CLEAR
+ - Clear screen, free all memory used by texts in window.
+/SB HOME
+ - Jump to start of the buffer.
+/SB END
+ - Jump to end of the buffer.
+/SB GOTO [[-|+]line#|time]
+ - Jump to specified line or timestamp.
+ time format is [dd[.mm] | -<days ago>] hh:mi[:ss].
See also: SET SCROLL