XP Orx Missing Menu Settings?

[Kelpike]

I'm a little confused about a couple settings on my Orx. I do not see "Threshold" anywhere in my menu. I also do not see Disc IAR, unless that is the same as Disc. 

[Jeff McClendon]

Threshold and discrimination iron amplitude rejection are parts of the Gold prospecting modes menus. They are not included in the menu in the Coin fast and Coin deep modes.

The ORX manual is very lacking in details and has some glaring mistakes in my opinion. One of those is that near the end of the manual there is the default settings page for the four modes. Disc IAR is shown to only be a feature of the Gold modes. Threshold is shown to have a zero setting in all four modes which implies that it is a part of the menu in all four modes which is incorrect.