SintraWorks has released PDFClerk 2.1, an update to the personal assistant for PDF documents. The application can join multiple PDF documents together, rearrange page order, delete individual pages, and impose multiple pages onto a sheet of paper as well as rotate pages on imposed sheets. Users can print manuals, reports, essays, articles, and more in multiple languages -- including Arabic, Chinese, and Hebrew. PDFClerk 2.1 supports printing pages in mirror image form, crop marks, registration marks, and color or grayscale bars. PDFClerk 2.1 runs natively on both PowerPC and Intel-based Macs a Universal Binary, requires Mac OS X 10.4 or later, and is priced at $32. The update is free to registered users.