I'm looking for the same feature: heres a clarification on the process that was described for you very briefly above:
1-view source, for that part of the cart. in this case literally the shopping cart page
(in firefox you can select that area and right-click-> view selection source—or having the web developer extension allows you to see straight to the css id and class designations * see next step)
2- generally the most unique part of the zen code for a specific area are the css classes the core coders have been so generous with throughout- saving who knows how much time in a zen customizer's lifetime so you will want to find ...id="xxxxxxxxxxxxxxxx" or class="xxxxxxxxxxxxx" in the source you are viewing.
3- go to the developers toolkit, in admin under tools, then search for the id or class name from the previous step, use the bottom search box on the tookit page, and be sure to turn on the popup control that says all files catalog or all files catalog/admin
4- this will tell you which php files to look in. If you look in them you will find the variable names you want, near the unique id you used to track it down.
5- now use the developers toolkit to search the admin, or admin and catalog (set the popup to the right of the bottom search box to: all files - admin, etc. ) for the variable name from the previous step. If you pay attention to the results and do some trial and error, this search will yield the area of the admin you need to be looking in, or the file wherein resides the define that needs to be changed.
OTHER STRATEGIES 1. keep searching the forum use google search with site:zen-cart.com included
-
somewhere there is a "Reference" contribution which will run searches of the admin for things like this
-
Usually I just search the database directly with 3rd party software phpmyadmin via the hosts' cpanel if available, in particular the configuration description field of zen_configuration table, making sure its a wildcard search and this will allow me to edit
the configuration setting directly.
= = = = =
If I come up with a straight answer I'll leave that here as well.