Here is an example using JMP 14. Axis settings is not restricted to JMP Pro
If you create a histogram using either the Distribution Platform, or Graph Builder, right click on the axis and select "Axis Settings"
![ref1a.PNG ref1a.PNG](https://community.jmp.com/t5/image/serverpage/image-id/24257i482EDE02224013D1/image-size/large?v=v2&px=999)
![refb.PNG refb.PNG](https://community.jmp.com/t5/image/serverpage/image-id/24258iE7E4B0865621CDA7/image-size/large?v=v2&px=999)
A dialog box will come up where you can enter Reference Line specifications
![ref2 a.PNG ref2 a.PNG](https://community.jmp.com/t5/image/serverpage/image-id/24259iB8EB1A3981340A85/image-size/large?v=v2&px=999)
![ref2 b.PNG ref2 b.PNG](https://community.jmp.com/t5/image/serverpage/image-id/24260i22F1FD864ACAC49F/image-size/large?v=v2&px=999)
Fill out the information you want to be displayed and then click on OK, and you will get the reference lines displayed on the graph
![ref3.PNG ref3.PNG](https://community.jmp.com/t5/image/serverpage/image-id/24261i7F538E23EF048E76/image-size/large?v=v2&px=999)
Jim