====== Array ExMasks ======
This is an array of elements in the structure of the [[en:help:externalsource:item|Item object]] or [[en:help:externalsource:|root element]].  Used to specify  [[en:help:notions:mask|masks]] of the elements that should be excluded from the process of the task performance. 
===== Attributes =====
  * May contain [[en:help:externalsource:external|Priority attribute]]
  * May contain [[en:help:externalsource:priority|External attribute]]
  * While performing of task, one of the elements is selected , according with value of the Priority attribute.  
===== Structure =====
<code javascript>
"ExMasks":[
 {
  "ExMask":["<aExMask_1>","<aExMask_2>",...,"<aExMask_N>"],
  "External":"<aExternal_1>",
  "Priority":1
 },
  {
  "ExMask":["<aExMask_1>","<aExMask_2>",...,"<aExMask_N>"],
  "External":"<aExternal_2>",
  "Priority":1
 },
  ...,
  {
  "ExMask":["<aExMask_1>","<aExMask_2>",...,"<aExMask_N>"],
  "External":"<aExternal_N>",
  "Priority":1
 }
]
</code>
===== Example =====
<code javascript>
"Domains":[
 {
  "Domain":"waspace.net"
 }
],
"Pages":[
 {
  "Page":"/about.html"
 },
"ExMasks":[
 {
  "ExMask":["download","rules","forum"]
 }
]
</code>
The following actions will be performed:
  - Loading of the home page ''waspace.net/about.html''
  - Exception of the following links: ''http://waspace.net/download.html'', ''http://waspace.net/link.html'','http://forum.waspace.net''
  - Further task performance ...