Disclosed are compounds having one of the following formulae, , wherein X is an aromatic nucleophilic substitution leaving group; R1 is hydrogen, an alkyl group, or an aryl group; and Q1 is a carboxyl protecting group or an aldehyde protecting group. The dynamic directory of degree of freedom data for elements in a non-conformal mixed-element mesh includes elements subdividable into tetrahedral, in which a respective degree of freedom value is stored for each element, wherein the degree of freedom value is current as element subdivision proceeds. After receiving an authorization agreement from the customer, the scanner acquires at least one image from the document. The method may further include initiating a connection to the host using the selected DNS resolution.