1 files changed, 3 insertions, 0 deletions
diff --git a/readme.md b/readme.md
index f2d3142..f2697e3 100644
--- a/readme.md
+++ b/readme.md
@@ -112,6 +112,9 @@ the operand to the unary operator is denoted as `x` in these defintions. `*_x` i
 ### `*_`
 some specific instance(s) of `x`
 
+### `*:`
+all instances of `x`
+
 ### `&_`
 `y` where `x` is an instance of `y`; *such that* `&_*_x` *is equivalent to* `x`