Add doc note about ? symbol

1 files changed, 1 insertions, 0 deletions

diff --git a/Alpha.hs b/Alpha.hs
index 71ceef6..f1c5bdd 100644
--- a/Alpha.hs
+++ b/Alpha.hs
@@ -13,6 +13,7 @@
 -- - `|` normal function-level applications
 -- - `/` indicates doing something inside a functor
 -- - `<` and `>` indicate the direction in which values flow
+-- - `?` is for boolean tests or assertions
 --   between functions
 --
 -- It seems unnecessarily different at first but it makes things easier