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-rw-r--r--runtime/doc/syntax.txt9
1 files changed, 6 insertions, 3 deletions
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index bc5c4a5b3b..0e7c38b38d 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1294,12 +1294,15 @@ Stack Overflow -
https://stackoverflow.com/questions/12407800/which-comment-style-should-i-use-in-batch-files
-To allow the use of the :: idiom for comments in the Windows Command
-Interpreter or working with MS-DOS bat files, set the
-dosbatch_colons_comment variable to anything: >
+To allow the use of the :: idiom for comments in command blocks with the
+Windows Command Interpreter set the dosbatch_colons_comment variable to
+anything: >
:let dosbatch_colons_comment = 1
+If this variable is set then a :: comment that is the last line in a command
+block will be highlighted as an error.
+
There is an option that covers whether `*.btm` files should be detected as type
"dosbatch" (MS-DOS batch files) or type "btm" (4DOS batch files). The latter
is used by default. You may select the former with the following line: >