1 files changed, 7 insertions, 0 deletions
diff --git a/st.1 b/st.1
index 89b16b6..1bdf850 100644
--- a/st.1
+++ b/st.1
@@ -6,6 +6,8 @@ st \- simple terminal
 .RB [ \-aiv ]
 .RB [ \-c
 .IR class ]
+.RB [ \-A
+.IR alpha ]
 .RB [ \-f
 .IR font ]
 .RB [ \-g
@@ -30,6 +32,8 @@ st \- simple terminal
 .RB [ \-aiv ]
 .RB [ \-c
 .IR class ]
+.RB [ \-A
+.IR alpha ]
 .RB [ \-f
 .IR font ]
 .RB [ \-g
@@ -58,6 +62,9 @@ disable alternate screens in terminal
 .BI \-c " class"
 defines the window class (default $TERM).
 .TP
+.BI \-A " alpha"
+defines window opacity factor in range 0.0 to 1.0 (default 0.8).
+.TP
 .BI \-f " font"
 defines the
 .I font