Methods to update portals

A portal comprising a first portlet and plural second portlets wherein said first portlet comprises:

• a reception module to receive a first update notification, and
• a transmission module to transmit a second update instruction to each of the plural second portlets, the send second update instruction being the same for each second portlet.

A method to create a first portlet, implemented by a second portlet comprising an identifier, wherein said method comprises:

• the creation of the first portlet storing the identifier of the second portlet and a predetermined configuration adapting the first portlet to accept an update when the second portlet sends to the first portlet an update instruction comprising the identifier of the second portlet.

A first portlet comprising:

• an identifier, and
• a creation module to create a second portlet storing the identifier of the first portlet and a predetermined configuration adapting the second portlet to accept an update when the first portlet sends to the second portlet an update instruction comprising the identifier of the first portlet.