...as requested by another user.
here you go:
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This powerful InDesign plugin will set up crop marks for bleed, trim, safety, folds and page gutters. It sets up guides for all of the above mentioned crop marks and the GLUON-invented dimension arrows that others have imitated. Cropster enables the choice of machine centering on a page to facilitate double sided printing, and it features user definable presets. Use Cropster and yoll see why it is the industry standard for setting up electronic mechanicals.