Emacs automatically visits the locus of the first error message that
appears in the @file{*compilation*} buffer. (This variable can also
have the values @code{if-location-known} and @code{first-known}, which
-modifies whether to automatically visit.)
+modify the conditions for automatically visiting the error locus.)
Compilation mode provides the following additional commands. These
commands can also be used in @file{*grep*} buffers, where the