Thanks to kimyaci and robynk
Posted it on a couple of older threads but they appear to be obsolete. This handy little tool allows you to fully customise and generate a sys.txt file for both Igo and Primo. It has an easy to use interface in English, Spanish and French. Pretty self explanatory. No more trawling forums for half remembered commands .
Basically it is a windows program that categorises many of the Igo and primo sys text commands. It provides clear explanations of what they do. You just tick the boxes for those that you want to use and the program can then generate a new sys.text file or update an existing one. Very useful for both customising and troubleshooting in IGo as it saves you having to look up the commands or even doing any typing.
The original comes from a spanish forum and I presume any updates will be published there.