Add "between to newshape.layer as well.

Make line length of description shorter.

Author: my-tien

src/components/shapes/attributes.js

@@ -113,7 +113,10 @@ module.exports = templatedArray('shape', {
         values: ['below', 'above', 'between'],
         dflt: 'above',
         editType: 'arraydraw',
-        description: 'Specifies whether shapes are drawn below gridlines (*below*), between gridlines and traces (*between*) or above traces (*above*).'
+        description: [
+            'Specifies whether shapes are drawn below gridlines (*below*),',
+            'between gridlines and traces (*between*) or above traces (*above*).'
+        ]
     },
 
     xref: extendFlat({}, annAttrs.xref, {

src/components/shapes/draw_newshape/attributes.js

@@ -117,9 +117,12 @@ module.exports = overrideAll({
         },
         layer: {
             valType: 'enumerated',
-            values: ['below', 'above'],
+            values: ['below', 'above', 'between'],
             dflt: 'above',
-            description: 'Specifies whether new shapes are drawn below or above traces.'
+            description: [
+                'Specifies whether new shapes are drawn below gridlines (*below*),',
+                'between gridlines and traces (*between*) or above traces (*above*).'
+            ]
         },
         drawdirection: {
             valType: 'enumerated',

test/plot-schema.json

@@ -3720,13 +3720,17 @@
      }
     },
     "layer": {
-     "description": "Specifies whether new shapes are drawn below or above traces.",
+     "description": [
+      "Specifies whether new shapes are drawn below gridlines (*below*),",
+      "between gridlines and traces (*between*) or above traces (*above*)."
+     ],
      "dflt": "above",
      "editType": "none",
      "valType": "enumerated",
      "values": [
       "below",
-      "above"
+      "above",
+      "between"
      ]
     },
     "legend": {
@@ -7708,7 +7712,10 @@
        }
       },
       "layer": {
-       "description": "Specifies whether shapes are drawn below gridlines (*below*), between gridlines and traces (*between*) or above traces (*above*).",
+       "description": [
+        "Specifies whether shapes are drawn below gridlines (*below*),",
+        "between gridlines and traces (*between*) or above traces (*above*)."
+       ],
        "dflt": "above",
        "editType": "arraydraw",
        "valType": "enumerated",