Quest Help Link (qHelpLink)

The qHelpLink web part was originally intended to be used to facilitate the implementation of context-sensitive help pages.  The idea is that one finds a "Help" button, menu item or link on a page in a consistent location, which, when pressed, invokes a "Help" page appropriate to the content.

The way this works is that the qHelpLink web part is configured to use data from a SharePoint list which "maps" defined text tokens to respective URLs (of help pages):

The web part itself is configured to look for the URL for a particular text token. Once the web part has been correctly configured, all the user can see on the page is a link with the label text configured in the web part (usually "Help" for help systems!). 

Help

At run time, when the link is pressed, the web part finds the right help page and redirects the user to it.

In fact, "qHelpLink" is a misnomer because, although the web part functions very well to facilitate a context-sensitive help system, there is actually no reason why the web part cannot be used to invoke any type of web page or web-accessible file type.  Hence, one could use the web part to invoke Terms and Conditions, Health and Safety notices, Data Protection etc.