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-rw-r--r--wiki/Configuration:-Window-Rules.md1
1 files changed, 1 insertions, 0 deletions
diff --git a/wiki/Configuration:-Window-Rules.md b/wiki/Configuration:-Window-Rules.md
index 695e89df..581931eb 100644
--- a/wiki/Configuration:-Window-Rules.md
+++ b/wiki/Configuration:-Window-Rules.md
@@ -119,6 +119,7 @@ Let's look at the matchers in more detail.
#### `title` and `app-id`
These are regular expressions that should match anywhere in the window title and app ID respectively.
+You can read about the supported regular expression syntax [here](https://docs.rs/regex/latest/regex/#syntax).
```
// Match windows with title containing "Mozilla Firefox",