1 files changed, 7 insertions, 0 deletions
diff --git a/pfc.1 b/pfc.1
index a3a627b..b1216f2 100644
--- a/pfc.1
+++ b/pfc.1
@@ -78,3 +78,10 @@ Convert radians to degrees.
 .TP
 .B rad
 Convert degrees to radians.
+.SS Constants
+.TP
+.B pi
+Archimedes’ constant (π).
+.TP
+.B e
+Euler’s number (e).