may be enabled or disabled individually;
see below.
+.RS
+.TP
--warn=deprecated-copy, --warn=no-deprecated-copy
Enables or disables warnings about use of the deprecated
.B env.Copy()
method.
+.TP
--warn=deprecated-source-signatures, --warn=no-deprecated-source-signatures
Enables or disables warnings about use of the deprecated
-SourceSignatures() function
-or
+.B SourceSignatures()
+function or
.B env.SourceSignatures()
method.
+.TP
--warn=deprecated-target-signatures, --warn=no-deprecated-target-signatures
Enables or disables warnings about use of the deprecated
-TargetSignatures() function
-or
+.B TargetSignatures()
+function or
.B env.TargetSignatures()
method.
+.RE
.TP
--warn=duplicate-environment, --warn=no-duplicate-environment
This example adds 'include' to
.BR CPPPATH ,
-\'EBUG' to
+\&'EBUG' to
.BR CPPDEFINES ,
and 'm' to
.BR LIBS .
.SS Action Objects
The
-.BR Builder()
+.BR Builder ()
function will turn its
.B action
keyword argument into an appropriate