[S-mailx] colour: manual allows no arguments. In Paractice, at least one is required.

[Ron Varburg]

Hello,

https://www.sdaoden.eu/code-nail.html#160 states:

    Without arguments the former shows all currently defined mappings.

I think the former refers to colour.

On the other hand:

? colour
s-nail: `colour' requires at least 1 arg(s)
? ? colour
colour: Show colour settings of <type> (1,8,256,all/*) or define one

Apparently, at least one argument is required.