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-rw-r--r--man/man4/acme.47
1 files changed, 4 insertions, 3 deletions
diff --git a/man/man4/acme.4 b/man/man4/acme.4
index a285b3b8..f55a85b7 100644
--- a/man/man4/acme.4
+++ b/man/man4/acme.4
@@ -184,9 +184,10 @@ is always appended; the file offset is ignored.
.B ctl
may be read to recover the five numbers as held in the
.B index
-file, described above, plus three more fields: the width of the
-window in pixels, the name of the font used in the window,
-and the width of a tab character in pixels.
+file, described above, plus five more fields: the width of the
+window in pixels; the name of the font used in the window;
+the width of a tab character in pixels; a 1 if there is undo history, 0 otherwise;
+a 1 if there is redo history, 0 otherwise.
Text messages may be written to
.B ctl
to affect the window.