diff --git a/yadm.1 b/yadm.1
index e6e73b4..ffcdbf4 100644
--- a/yadm.1
+++ b/yadm.1
@@ -850,7 +850,8 @@ The command which triggered the hook
 The exit status of the yadm command
 .TP
 .B YADM_HOOK_FULL_COMMAND
-The yadm command with all command line arguments
+The yadm command with all command line arguments (parameters are space
+delimited, and any space, tab or backslash will be escaped with a backslash)
 .TP
 .B YADM_HOOK_REPO
 The path to the yadm repository