add "+/-" info key in README.rst file

9 years ago · 718e3c76ad
1 changed files with 2 additions and 0 deletions
--- a/pos_keyboard/README.rst
+++ b/pos_keyboard/README.rst
@ -16,6 +16,8 @@ mode disk   ``-``                 ``d``
 ----------- --------------------- -----------------
 mode price  ``*``                 ``p``
 ----------- --------------------- -----------------
+/-         ``+``                 ``s``
+----------- --------------------- -----------------
 backspace   ``backspace``         ``backspace``
 ----------- --------------------- -----------------
 dot         ``.``                 ``.``