How would I browse and select files through JSL code?

[#1]

I have a button but I want to be able to click it and browse and select files (.jmp) how would I do this?

Also, is there a way that you can programmatically convert one file type to another?

[#2 · Accepted solution]

Pick Directory and Pick File most likely will help you do what you want (see Scripting Index)

Converting can be done usually by just using Save (or Save As). Again see Scripting Index