Grid Certificates are intended for servers, but also clients who participate in the global e-Science Grid; In the past it was mostly about high-energy physics, but nowadays increasingly sciences where big-data is worked and for which many claim to be using it.
Document Signing is about the signing of documents on behalf of an organization. If a person with his own name a document (in PDF) will sign it uses a Client Certificate. A Document Signing certificate is like an Extended Validation Code Signing certificate put on a FIPS 140-2 token. It is possible é é n Aladdin eToken Pro 72K to combine the two certificates (Doc Sign and EV Codesign). The old 'blue stickje' with the SURFnet logo was a eToken Pro 3 2K; that is not useful for Document Signing.There is a set of screenshots available on request and install a Document Signing certificate. Ask if desired to meet email@example.com .