🚀 go-pugleaf

Suppose one is running an app. The app started from some directory. From that app how 
to evoke the default browser and pass it the path to a file that is relative to the 
dir that the exe is in?

My question probably breaks into a few parts:

1) Can I assume that any path passed to a browser will be interpreted as being a 
relative path to the current exe? I'm guessing the answer is NO. So how to find out 
the path of the exe?

2) Is there a syntax for a local file URL that all browsers recognize? I see that IE 
doesn't do file:/// for files you open locally but Mozilla does use that syntax.

4) How to convert the local path to URL format with the backslashes converted to 
forward slashes? Is there a routine in a BCB or OS lib that will do this?

5) Is it necessary to do double quoting escapes for paths that have spaces in dir names?

6) Is there a way to tell the browser to open a new instance/window/tab rather than 
replace the current page of the browser with the new page?