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The meta tags form should have its validation code that should verify, in example, that the location coordinates are both entered, and have the correct format; also other meta tags could be validated, before to be accepted.
Comments
Comment #1
apadernoI added the validation code for the geourl meta tags.
Comment #2
apadernoI added a validation function whenever possible; I didn't add a validation function for the "pics-label" because it doesn't have a fixed format (in example, some parts are optional, and there isn't a specific order for each part).
Comment #3
apaderno