anchor.diff:  
   		Schema: map[string]*schema.Schema{
   			"base_instance_name": {
  -				Type:     schema.TypeString,
  -				Required: true,
  -				ForceNew: true,
  +				Type:        schema.TypeString,
  +				Required:    true,
  +				ForceNew:    true,
  +				Description: `The base instance name to use for instances in this group. The value must be a valid RFC1035 name. Supported characters are lowercase letters, numbers, and hyphens (-). Instances are named by appending a hyphen and a random four-character string to the base instance name.`,
   			},
   
   			"instance_template": {
  -				Type:     schema.TypeString,
  -				Computed: true,
  -				Removed:  "This field has been replaced by `version.instance_template` in 3.0.0",
  +				Type:        schema.TypeString,
  +				Computed:    true,
  +				Removed:     "This field has been replaced by `version.instance_template` in 3.0.0",
  +				Description: `The full URL to an instance template from which all new instances of this version will be created.`,
   			},
   
   			"version": {
  -				Type:     schema.TypeList,
  -				Required: true,
  +				Type:        schema.TypeList,
  +				Required:    true,
  +				Description: `Application versions managed by this instance group. Each version deals with a specific instance template, allowing canary release scenarios.`,
   				Elem: &schema.Resource{
   					Schema: map[string]*schema.Schema{
   						"name": {
  -							Type:     schema.TypeString,
  -							Optional: true,
  +							Type:        schema.TypeString,
  +							Optional:    true,
  +							Description: `Version name.`,
   						},
   
   						"instance_template": {
   							Type:             schema.TypeString,
   							Required:         true,
   							DiffSuppressFunc: compareSelfLinkRelativePaths,
  +							Description:      `The full URL to an instance template from which all new instances of this version will be created.`,
   						},
   
   						"target_size": {
  -							Type:     schema.TypeList,
  -							Optional: true,
  -							MaxItems: 1,
  +							Type:        schema.TypeList,
  +							Optional:    true,
  +							MaxItems:    1,
  +							Description: `The number of instances calculated as a fixed number or a percentage depending on the settings.`,
   							Elem: &schema.Resource{
   								Schema: map[string]*schema.Schema{
   									"fixed": {
  -										Type:     schema.TypeInt,
  -										Optional: true,
  +										Type:        schema.TypeInt,
  +										Optional:    true,
  +										Description: `The number of instances which are managed for this version. Conflicts with percent.`,
   									},
   
   									"percent": {
   										Type:         schema.TypeInt,
   										Optional:     true,
   										ValidateFunc: validation.IntBetween(0, 100),
  +										Description:  `The number of instances (calculated as percentage) which are managed for this version. Conflicts with fixed. Note that when using percent, rounding will be in favor of explicitly set target_size values; a managed instance group with 2 instances and 2 versions, one of which has a target_size.percent of 60 will create 2 instances of that version.`,
   									},
   								},
   							},
  
positive.code: 							Optional:      true,
  							Computed:      true,
  							ConflictsWith: []string{"update_policy.0.max_surge_percent"},
  						},
  
  						"max_surge_percent": {
  							Type:          schema.TypeInt,
  							Optional:      true,
  							ConflictsWith: []string{"update_policy.0.max_surge_fixed"},
  							ValidateFunc:  validation.IntBetween(0, 100),
  						},
  
  
negative.code: 							Type:          schema.TypeInt,
  							Optional:      true,
  							Computed:      true,
  							Description:   `The maximum number of instances that can be unavailable during the update process. Conflicts with max_unavailable_percent. It has to be either 0 or at least equal to the number of zones. If fixed values are used, at least one of max_unavailable_fixed or max_surge_fixed must be greater than 0.`,
  							ConflictsWith: []string{"update_policy.0.max_unavailable_percent"},
  						},
  
  