From 35e83fdbd8fbca69efb1afd9b4942c1c3bec6dec Mon Sep 17 00:00:00 2001
From: Moritz Maxeiner <mm@ucw.sh>
Date: Tue, 19 Jan 2021 14:16:05 +0100
Subject: [PATCH] Make poses dataset optional

---
 src/main.org | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.org b/src/main.org
index bc97bcf..d24621c 100644
--- a/src/main.org
+++ b/src/main.org
@@ -237,7 +237,7 @@ Samples taken for an entity must be represented as datasets with the length repr
 
 Missing float samples must be represented by /NaN/ values.
 
-An entity must have a 2-dimensional 32-bit float dataset named /poses/, representing the entity's poses with axes time and coordinate. If the dataset's length is \(1\), the entity is considered /fixed in place/.
+An entity may have a 2-dimensional 32-bit float dataset named /poses/, representing the entity's poses with axes time and coordinate. If the dataset's length is \(1\), the entity is considered /fixed in place/.
 
 An entity may contain a 3-dimensional 32-bit float dataset named /outlines/, representing the entity's outlines with the axes time, point, and coordinate. Any outline with less points than the size of /outlines/' second dimension must pad with trailing /NaN/ coordinates. If the dataset's length is \(1\), the entity is considered to have a /fixed outline/.
 
-- 
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