The usage of text parameter of "Add Item" api

Discussion created by sunnoje2013 on Sep 7, 2013
Latest reply on Sep 8, 2013 by rlwatson
Observing a request from my client PC to the ArcGIS online,
in the event of creating a web map item, the text parameter of
"add item REST API" includes the lines below:

{"operationalLayers":[{"url":"","id":"wms_8527","visibility":true,"visibleLayers":["lands","islands","lakes","ponds"],"opacity":1,"title":"GEO Grid, AIST. WMS ...

On the ArcGIS REST API Resources
"text" parameters describes
  The text content for the item to be submitted.
  Example: text=Any+plain+text+content

Does anyone instill me the usage of the text parameter, not just a text?