The idea of the attached PDF document is to download some fonts used by Adobe Reader beforehand I'm possibly offline from the Internet unable to download the fonts when reading manuals. Some foreign country technical manuals have fonts that need to be downloaded to be able to open them even though those documents mostly contain only English language text. Instructions for download: click the zip file, click the down arrow and then select "Download" (or just press the dark blue down arrow on this current page).
Adobe Reader X Font Packs - Chinese Traditional (used by ZyXEL P-2812HNU-F1 User's Guide on the installation disc)
Last modified: October 14th, 2013
Author: Tomi Häsä (tomi.hasa@gmail.com)
URL: http://sites.google.com/site/tomihasa/adobe-reader-font-download-document