1 files changed, 12 insertions, 3 deletions

diff --git a/release/sysinstall/sysinstall.8 b/release/sysinstall/sysinstall.8
index 3fb12dc2e2c1..1d5637db7d1f 100644
--- a/release/sysinstall/sysinstall.8
+++ b/release/sysinstall/sysinstall.8
@@ -163,9 +163,18 @@ is a single-line comment for documentation purposes (ignored by
 sysinstall).  Each directive must be by itself on a single line,
 functions taking their arguments by examining known variable names.
 This requires that you be sure to assign the relevant variables before
-calling a function which requires them.  When and where a function
-depends on the settings of one or more variables will be noted in the
-following table:
+calling a function which requires them.
+.Pp
+The 
+.Ar noError
+variable can be assigned before each directive: this will cause any error
+detected while processing the directive itself to be ignored. The value of
+.Ar noError
+will automatically reset to the default "unassigned" every time a directive is
+processed.
+.Pp
+When and where a function depends on the settings of one or more variables
+will be noted in the following table:
 .Pp
 .Sy "Function Glossary" :
 .Pp