>I have seen references in code that look like this:

Local lnSomething as Integer

>Obviously this tells me that {lnSomething} is an integer, but I knew that because it begins with ln,
>
>So, what is the purpose in doing so? Does VFP use this information in some way?
>
>P.S.: I do understand the use of this structure when it refers to 'as Form', or whatever, just not when it refers to a datatype like String or Integer.


I like to use it as a basic in-line documentation, for example, to use your sample, for me is not 100% clear that ln is for Integers, as I use it for numbers, but in the declaration I would use

local lnIterator as Integer, lnValue as Decimal(10, 4) && For example if I am mapping the value to a table

Also there are some types that not everyone agrees to it's prefix, for example variant, some use lv, others lx etc. where local lxTest as Variant would clarify the issue