One of the less well documented file formats Psion developed was the CTL file (*.ctl). Originally designed for use with the PsiSetup installer, it uses the following format:
A CTL file is a plain text file.
Each file has a line to itself with the following syntax:
[<dirpath.]<filename>.<extension>
<dirpath> specifies
where on the disk the file will go e.g. \app\myprog\pic\
N.B. do not include the destination disk!
<filename> this is the eight character filename
<extension> this is the three character extension
All file must be in the root of the same directory as the CTL file.
Next up up you need to associate the file.
Double clicking on a CTL file should now launch EPOC Install and prompt you to select a drive to install to.