\fB-o <output filename>\fR, \fB--output <output filename>\fR set the
result mbox filename. If it is not set, the standard output is used
.TP
-\fB-a <search field>\fR, \fB--default-search <search field>\fR
-set the default search field. If a search request is not understood,
-it is interpreted as the regexp with this default search field
+\fB-a <search key>\fR, \fB--default-search <search key>\fR
+set the default search key. If a search request is not understood,
+it is interpreted as the regexp with this default search key
.SH "ENVIRONMENT VARIABLES"
.SH "SEARCH SYNTAX"
-The search conditions take the form of a single letter followed by a
-space and a regexp, which can itself contain spaces. If the condition
-is prefaced by the character "!" it is negated, and has to be false
-for a mail to be selected.
+The search conditions take the form of a key which is a single letter,
+followed by a space and a regexp, which can itself contain spaces. If
+the condition is prefaced by the character "!" it is negated, and has
+to be false for a mail to be selected.
-The time-based condition use as reference the time indicated in the
+The time-based conditions use as reference the time indicated in the
heading From line, and not in the Date: field.
.TP