nested list format for the helper function to generate the PEST control file

[flydream0428]

In the function doc, it says the nested format is like this ["lpf.hk",[0,1,2,]]. However, to make it work, it should be in the format like the one below
[["lpf.hk",0], ["lpf.hk",1]],["lpf.hk",2]]

[jtwhite79]

Good question @flydream0428 . ["lpf.hk",[0,1,2]] will result in one set of HK pars (of whatever spatial distribution) and apply those pars to layers 1,2 and 3. The other form, [["lpf.hk",0], ["lpf.hk",1]],["lpf.hk",2]], will result in separate sets of HK parameters for each layer listsed. I realize this might be confusing but its a way to share parameter sets across multiple model input arrays.