signature on the print checks

hi folks,

I have a question related to printing signature on the checks, I need to find how it is done,

In the sap script under the signature window, I found the following code for the text elements,

'INCLUDE ZHEX-MACRO-PPC-SIGNATURE OBJECT TEXT ID ST LANGUAGE EN

where PPC is the company code.

what does this mean? Is it coded in a macro? Any leads would be really helpful.

Thanks,

SK