1 Scroll down to the bottom of the page and click the link labeled Get Add-ons to navigate to the Internet Explorer Gallery Add-ons webpage. 2  Select an add-on category from the list of options in the column or use the search engine to locate a particular add-on, extension or plug-in from the available options provided. Click the link labeled Find more toolbars and extensions, located in the lower-left corner of the dialog box, to be redirected to the Internet Explorer Gallery's webpage. 2  Scroll down to the bottom of the page and click the link labeled Get Add-ons to navigate to the Internet Explorer Gallery Add-ons webpage.
PDH may refer to: 1  Angiotensin-converting enzyme, an enzyme. 2  Plesiochronous digital hierarchy, a technology used in telecommunications networks.
Professional Development Hour (PDH) is defined as one contact hour of. instruction, presentation or study. The term PDH is commonly used in the. engineering community. The maximum PDH for a seminar that starts at 8 a.m. and ends at 5 p.m. with an hour lunch is eight (8). Short breaks are permissible. as long as a minimum of 50 minutes of presentation/participation/study per. hour is undertaken.