I do have the programming manual. Finding it hard to follow. Getting too mixed up on things here. Thanks for clarifying " ... " for flile names.
\ and / is right quagmire here. Maple gives folder names as follows in windows.
"C:\Program Files\Maple 2017\lib",
To enter a command such as read, have to use / else get an error.
read(cat("C:\Users\Ronan\Documents\MAPLE\Rational_Trinonometry","/Antisym.mpl")); doesn't work
Error, unable to read `C:UsersRonanDocumentsMAPLERational_Trinonometry/Antisym.mpl`
I follow what you did in the example module "RatTrig". Now as you have saved "Antisym" as a file previously. Instead of copying the code into the module can you read that file into the module? The programming guide mentions "$include" to do this but I cant get it to work. Ch 11.4 pages 393-396.
At present I don't see the use/advantage of a code editor. Downloaded Vim last year but just didn't know what to do with it.