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-rw-r--r--docs/fs.md4
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/fs.md b/docs/fs.md
index 4673e042..41b960f2 100644
--- a/docs/fs.md
+++ b/docs/fs.md
@@ -146,7 +146,9 @@ in Plan 9's words for a ctl (kernel/misc/parse.c:82-97), quoting the line:
`unknown control message "X"`; `wrong #args in control message "X"` for an
argument to a builtin that takes none, or none to one that needs it (`Msg`,
`Mount`, `Find`, a setting's value but a switch's, which flips bare);
-`bad value in control message "X"` for a setting's value it does not take;
+`bad value in control message "X"` for a setting's value it does not take
+(for `Theme`, naming the themes that share the name's first letter, since
+all of them, `ThemeSel`'s list, are too many for an error);
and `not a session control message "X"` or `not a window control message
"X"` for a word of the other ctl. 9ns maps them all to EINVAL, and a write
refused here has done nothing. A line that then fails as it runs fails the