Dynamic Dates for Parameters or Schedules

Summary

Is there a list of dynamic dates for use in parameters or in schedules?

Content

Hi all - I did review this post (https://cloudcustomerconnect.oracle.com/posts/86211f77d4) and saw some dates listed there, but would like to know if there are more?  I saw current date, days forward, days back, current month, and current year.  But I am hoping that maybe people have others that they are using?  For example, last month.  We do have a request for running data for the previous month.  I assume I would write it like this:

Date From: {$FIRST_DAY_OF_MONTH()-1$}