From af106ca67183c18f57486231fded9fc348069d8a Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Fri, 15 Oct 2021 16:29:18 +0300
Subject: Add some tags

* Tag issue as a "migration" issue (that might be the wrong tag), and
  also tag it as "in progress"
---
 topics/gn1-migration-to-gn2/partial-correlations.gmi | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'topics/gn1-migration-to-gn2')

diff --git a/topics/gn1-migration-to-gn2/partial-correlations.gmi b/topics/gn1-migration-to-gn2/partial-correlations.gmi
index f7b6cb1..f6c103d 100644
--- a/topics/gn1-migration-to-gn2/partial-correlations.gmi
+++ b/topics/gn1-migration-to-gn2/partial-correlations.gmi
@@ -27,16 +27,20 @@ That gives you a list of hits.
 ## Tags
 
 * assigned: fredm
+* migration, in progress
 
 ## Notes
 
 ### 2021-10-15: fredm
 
+#### UI Exploration
+
 The example in the description above says to pick 3 traits from the search results to use for the partial correlation.
 
 If you, however, find need to pick more than 3 traits, the following things are of note:
 
 * There can only ever be a single **Primary** trait: if the user selects more than one, indicate an error
+* At lease one control trait MUST be selected. If there is no selected control trait, indicate an error
 * There can only ever be a maximum of 3 **Control** traits: if the user selects more than three, indicate an error
 * For **Pearson's r** and **Spearman's rho** computations (the buttons immediately below the table), there must be at least one Target trait. If the user does not provide any, indicate an error
 
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