SharePoint 2013 Designer workflows now has two new interesting options: the ability to call HTTP web services and the option to loop over some code a number of times. This, together with the new REST API, which supports querying lists and returning data in JSON, allows iterating through list items ... » Learn More about Workflow loop through SharePoint list
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How to create Charts in Sharepoint
WebPart charts have been, for some reason, removed from SharePoint 2013 (including online) onwards. Probably because Microsoft thought that having Excel Web Parts Charts is a better idea. It may well be, but Excel Web Part Charts can't use Sharepoint lists directly. Fortunately, there is a number of ... » Learn More about How to create Charts in Sharepoint