[SOLVED] Can I set ]Box and ]Rows settings for new installations of Dyalog?

Can I set ]Box and ]Rows settings for new installations of Dyalog?

Sometimes I install a new version of Dyalog and I have to re-set my ]Box and ]Rows settings.

]box on -fns=on
]rows on -fns=on -fold=3

I know I can set these and then save the session file, but I can't simply copy my old session file for use with a new version of Dyalog. It's not a lot of effort but would be one less thing to think about if I could set it in one place and forget about it.

Solution

Edit: Reflect feedback from Adám's comment below.

One approach is to create a Run function under a subdirectory of ⎕SE.Dyalog.StartupSession.VerAgno, e.g. in .../StartupSession/rc/Run.aplf

∇Run
 ⎕SE.UCMD'←Box on -fns=on'
 ⎕SE.UCMD'←Rows on -fns=on -fold=3'
∇

where the ← characters suppress output.

Another approach, with caveats listed in Adám's comment below, is to set the LOAD variable to Run.aplf, i.e. your dyalog.dcfg would look something like this:

{ settings: {
    LOAD: "Run.aplf",
    ...
}}

and place Run.aplf in the same directory as your dyalog.dcfg.

If setup correctly, then when you start your session, you will see a message telling you that the script loaded: Loaded: #.RC from "path/to/your/RC.aplf". Granted, this approach is somewhat brute force and will cause problems if your script accumulates any version-specific code.