LDN - Luminis Developer Network

Good Day,
I need to build a custom PL/SQL package that can identify the currently logged on user when launched from a link within an IFrame channel.
Any advise on how to do this would be greatly appreciated.

I am trying to add a link to an SSB page and have identified where I need to add the link. The link is to an external system and I can see that it must be included in a BANINST1 package but I don't know how to code it to point to the right URL or how to test only my code without running the entire package.

I want a link, such as "anchor verbiage" which points to some mylink constant with some variables. In HTML this would be coded as my verbiage

This is my code:
twbkfrmt.f_printanchor(