implement the roff(7) d (macro or string defined) conditional

1 files changed, 9 insertions, 2 deletions

diff --git a/roff.7 b/roff.7
index 5905ce06..fdefb674 100644
--- a/roff.7
+++ b/roff.7
@@ -1045,8 +1045,6 @@ If the first character of
 is
 .Sq c
 .Pq character available ,
-.Sq d
-.Pq string defined ,
 .Sq e
 .Pq even page ,
 .Sq t
@@ -1059,6 +1057,15 @@ it evaluates to false.
 If the first character of
 .Ar condition
 is
+.Sq d ,
+it evaluates to true if the rest of
+.Ar condition
+is the name of an existing user defined macro or string;
+otherwise, it evaluates to false.
+.It
+If the first character of
+.Ar condition
+is
 .Sq r ,
 it evaluates to true if the rest of
 .Ar condition