diff --git a/Readme.md b/Readme.md
index a6d3673..aacd130 100644
--- a/Readme.md
+++ b/Readme.md
@@ -93,8 +93,14 @@ e.g. `%q` becomes `q`. Use `%%` to get a literal `%` sign.
      of UTC and a minus sign for those west of UTC, hours and minutes follow each
      padded to 2 digits and with no delimiter between them
 
-For more detail see `man 3 strftime` as the format specifiers should behave identically. If behaviour differs please [file a bug](https://github.com/samsonjs/strftime/issues/new).
+For more detail see `man 3 strftime` as the format specifiers should behave
+identically. If behaviour differs please [file a bug](https://github.com/samsonjs/strftime/issues/new).
 
+Any specifier can be modified with `-`, `_`, or `0` as well, as in Ruby.
+Using `%-` will omit any leading zeroes or spaces, `%_` will force spaces
+for padding instead of the default, and `%0` will force zeroes for padding.
+There's some redundancy here as `%-d` and `%e` have the same result, but it
+solves some awkwardness with formats like `%l`.
 
 Contributors
 ============