X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=README;h=fd10056368dfdf7d5679b8440c64d2649cb46395;hb=9f681120dc97ea063c3fd13b550ddc19e66e9403;hp=6bc8e82d8611f4a31525e9c0f22590446d170a1a;hpb=f99c7def1e8afb27b0df6c605ff6847f676d6bfe;p=secnet.git

diff --git a/README b/README
index 6bc8e82..fd10056 100644
--- a/README
+++ b/README
@@ -268,9 +268,10 @@ So pathname syntax is a subset of:
 	recognised at start of line only (possibly after lwsp)
 	args are processed for &
 
-&:include filename		filename should usually be foo.sd.mk
+&:include filename		filename should usually be [&]foo.sd.mk
 &:-include filename		tolerate nonexistent file
 	filenames are relative to $(top_srcdir)
+	RHS is &-expanded
 
 &!<lwsp>	disables & until EOL (and then disappears)
 
@@ -294,7 +295,8 @@ So pathname syntax is a subset of:
 		NEWQUOTE:changequote &	set escape back to &
 
 &TARGETS_things
-	Handled specially.  If mentioned, declares that this
+	Handled specially.  If mentioned at the start of a line
+	(possibly following whitespace), declares that this
 	subdir ought to have a target `things'.  The rule will be
 		&/things:: $(&TARGETS_things)
 
@@ -308,9 +310,9 @@ So pathname syntax is a subset of:
 	which recursively implies this directory's `things'.
 
 	Must be spelled exactly &TARGETS_things.  &_TARGETS_things,
-	for example, is not magic.  But mentioning &TARGETS_things in
-	a #-comment *does* work because the & filter does not care
-	about comments.
+	for example, is not magic.  To make the target exist
+	without providing any prerequisites for it, write a line
+	containing just `&TARGETS_things +='.
 
 	`all' is extra special: every directory has an `all'
 	target, which corresponds to &TARGETS.