From cbbd4959455c8c6a70839e5806b0f3a22a7fda05 Mon Sep 17 00:00:00 2001
From: Pjotr Prins
Date: Thu, 1 Jul 2021 03:15:48 -0500
Subject: Documented NA value for BIMBAM format

---
 doc/manual.tex | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'doc')

diff --git a/doc/manual.tex b/doc/manual.tex
index 8c277f7..0a6210b 100644
--- a/doc/manual.tex
+++ b/doc/manual.tex
@@ -407,7 +407,8 @@ rs2, G, C, 0.98, 0.04, 1.00
 GEMMA codes alleles exactly as provided in the mean genotype file, and
 ignores the allele types in the second and third columns. Therefore,
 the minor allele is the effect allele only if one codes minor allele
-as 1 and major allele as 0.
+as 1 and major allele as 0. Missing genotypes are represented as
+``NA'' values.
 
 One can use the following bash command (in one line) to generate
 BIMBAM mean genotype file from IMPUTE genotype files
-- 
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