Customise column format

[protist]

Is it possible to customise the column format, similar to the ls format? The ls settings don't appear to work for the columns, although they should ideally be separate anyway.

Also (maybe I should open another issue for this), I tend to view items by context, i.e. each column only contains items with a particular @ context. Hence, it would be also great to have a way to hide all tags, including the context. My understanding is that %s hides most tags except context and project. Ideally there should be a way to hide these both as well.