macro definition
A macro is like an application. Execution starts at the macro's Sub Main. The public symbols are accessible by other modules/macros by way of the '#Uses special comment.
A macro name may be suffixed with "/certkey". This insures that the macro being used has been encrypted using the Decryption certificate indicated by certkey. The following macro nameSecureMacro.wwd/00000003is valid only if SecureMacro.wwd has been encrypted using the 00000003 Decryption certificate.