clarify documentation of macro keys

1 files changed, 23 insertions, 0 deletions

diff --git a/apropos.1 b/apropos.1
index 12fb0b81..6786b56a 100644
--- a/apropos.1
+++ b/apropos.1
@@ -328,6 +328,29 @@ Text production:
 .It Li \&Ox Ta Ox No version reference
 .It Li \&Dx Ta Dx No version reference
 .El
+.Pp
+In general, macro keys are supposed to yield complete results without
+expecting the user to consider actual macro usage.
+For example, results include:
+.Pp
+.Bl -tag -width 3n -offset 3n -compact
+.It Li \&Fa
+function arguments appearing on
+.Ic \&Fn
+lines
+.It Li \&Fn
+fuction names marked up with
+.Ic \&Fo
+macros
+.It Li \&In
+include file names marked up with
+.Ic \&Fd
+macros
+.It Li \&Vt
+types appearing as function return types and
+.It \&
+types appearing in function arguments in the SYNOPSIS
+.El
 .Sh ENVIRONMENT
 .Bl -tag -width MANPAGER
 .It Ev MANPAGER