It's not good if the file is opened in a different version of the program because some things can change. For example, the fills of CorelDRAW X7 are quite different to those of previous versions and also allow selective transparency. For this reason, if you save the file back as a previous version, the program will ask if you want to convert text to curves and fills to bitmaps.
23 Feb 2010[23] X5 (15) 7 to X5 7 to X5 XP, Vista, 7, 8 Built-in content organizer (CorelConnect), CD, web graphics and animation tools, multi-core performance improvement, digital content (professional fonts, clip arts, and photos), object hinting, pixel view, enhanced Mesh tool with transparency options, added touch support, and new supported file formats.[24] It has developed Transformation, which makes multiple copies of a single object.
Leverage all the power you need with full support for technical publication standards, latest version .DWG CAD file import, and over 100 other data file formats to publish, share and output important technical documents. Using a diverse set of cross-media publishing and distribution capabilities, including CGM, WebCGM (incl. S1000D 4.2), SVG and PDF, you will ensure all of your important technical files will be delivered in a readable format.

A defined list can be interrupted by other paragraphs and lists, and can span different stories and different documents in a book. For example, use defined lists to create a multi-level outline, or to create a running list of numbered table names throughout your document. You can also define lists for separately numbered or bulleted items that are mixed together. For example, in a list of questions and answers, define one list for numbering the questions and another for numbering the answers.

Word is not designed for handling large document collaboration, which includes sending clients reports. As Leo has suggested, create the PDF of your report and send that your client. If they want changes, have them communicate them back and you make the necessary changes and then PDF the revised report again. It’s the only way that you can be absolutely certain that your client sees what you intended.
You create, edit, and preview the index using the Index panel (Window > Type & Tables > Index). The panel includes two modes: Reference and Topic. In Reference mode, the preview area displays complete index entries for the current document or book. In Topic mode, the preview area displays only topics, not page numbers or cross-references. Topic mode is used primarily for creating the index structure, whereas Reference mode is where you add your index entries.