update legend of the "volume timing" table (#678)

bids-standard · Nov 26, 2020 · 358c7da · 358c7da
1 parent ddc16b7
commit 358c7da
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/04-modality-specific-files/01-magnetic-resonance-imaging-data.md b/src/04-modality-specific-files/01-magnetic-resonance-imaging-data.md
@@ -381,9 +381,9 @@ sparse sequences.
 
 **Legend**
 
--   \[ X ] --> has to be filled
--   \[   \] --> has to be left empty
--   empty cell --> can be specified but not required
+-   \[ X ] --> MUST be defined
+-   \[  \] --> MUST NOT be defined
+-   empty cell --> MAY be specified
 
 #### fMRI task information