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The International Standard Book Number (ISBN) is a numeric commercial book identifier which is intended to be unique.[a][b] Publishers purchase ISBNs from an affiliate of the International ISBN Agency.
The Barcode generator tool lets you create a ISBN Barcode signatures that you can download and use to sign business contracts and official XLSM documents. Any ISBN Barcode contains unique textual information that confirms the identity of the signer or authorizes the business document. Barcode verification can be performed automatically by reading the signature content. The signatures content may vary depending on the Barcode or QR Code types. For example, barcodes allow to keep about 10-15 characters. The GroupDocs Generator tool allows you to generate electronic signatures from any browser for free without registration. GroupDocs will be happy to help you with the electronic signature generation and their usage on your documents.
Files with XLSM extension is a type of Spreasheet files that support Macros. From application point of view, a Macro is set of instructions that are used for automating processes. A macro is used to record the steps that are performed repeatedly and facilitates performing the actions by running the macro again. Macros are programmed with Microsoft's Visual Basic for Applications (VBA) from within the Excel Workbook using the Visual Basic Editor and can be run/debug directly from there.
ReadMoreYou can also sign other file formats. Please see the list below.