diff --git a/README.md b/README.md
index cf3e712..72b12b6 100644
--- a/README.md
+++ b/README.md
@@ -63,8 +63,10 @@ looks basically like this:
 and is comprised of _four_ main XML elements: `usi:documentation`, `usi:model`,
 `usi:include` and `usi:data`. The element `usi:include` reveals one of _two_
 possible orderings of the mass data (.tdx):
-either _channel wise_ (`<block>`) - all values of a specific channel follow subsequently -
-or _block wise_ (`<block_bm>`) - all values of a specific measurement time follow subsequently -
+
+1. either _channel wise_ (`<block>`) - all values of a specific channel follow subsequently -
+1. or _block wise_ (`<block_bm>`) - all values of a specific measurement time follow subsequently -
+
 ordering. The supported _numerical data types_ are
 
 | datatype    | channel datatype | numeric | value sequence  | size  | description             |