When using a NeXTensio list, you have the option to display the filter by clicking on the Show filter link. This will change a session variable, telling the page to display the filter. Just the same, when wanting to hide the filter, clicking the Reset filter link will change the session variable once more, telling the page to hide the filter row.
When wanting to show the filter by default when the list page is accessed,
without having to click the Show filter link, you have to pass the list
page a URL parameter like this: show_filter_tfi_listfiles_fls1.
The exact parameter name depends on the name of your NeXTensio
List. To find the list name, go to the Server Behaviors panel,
and double-click NeXTensio List Layout > Advanced:

The base of the string is show_filter_tfi_. Just
add the list name to the end of it. From the image above, the URL parameter
becomes show_filter_tfi_listcompany_com1 .
If the show_filter_tfi_listcompany_com1 URL parameter is equal to 1, the filter will be displayed. For a NeXTensio List on a list.php file, the link will be: list.php?show_filter_tfi_listcompany_com1=1.
Simply use the same link in all other pages that reference the NeXTensio list page, and when the page loads, the filter will be displayed.
If you also need to filter the list by a specific column -e.g. the company name - when the page loads, follow these steps:
With the page containing the list opened in Code view, locate the area defining the filter. It starts with a //Filter comment.
Find the call to the addColumn method for the name_com column. The addColumn method takes 5 arguments: 4 required and already on the page, and the last one optional. This last argument is of interest as it passes the default value to the filter.
Add the value to filter by as the last argument to the method.
Next time you load the page, the list will be filtered by the name_com column.